Características y manejo de equipos

Agri-benchmark (2015). Retrieved fromhttp://www.agribenchmark.org/home.html(accessed 20.8.2015)

Ahnström, J., Hockert, J., Bergea, H., Francis, C.A., Skelton, P. & Hallgren, L. (2008). Farmers and nature conservation: What is known about attitudes, context factors and actions affecting conservation? Renewable Agriculture and Food Systems: 24(1); 38–47

Ajzen, I. (1991). The Theory of Planned Behavior. Organizational Behavior and Human Decision Processes50, 179 - 211

Baker-Galloway, M. (2013). The Inconsistent Regional Management of Farming Effects on Waterways. http://www.andersonlloyd.co.nz (accessed 10.3.2015)

Baldock, D., and Mitchell, K. (1995). Cross-Compliance within the Common Agricultural Policy. A Review of Options for Landscape and Nature Conservation. IEEP, London. Have used but not read - in Webster & Williams

Barkley, D.L. (n.d.).The value of case study research on rural entrepreneurship: useful method?Retrieved from

www.clemson.edu/uced/entrepreneurship_small_business_development.html (accessed 11.2.2013)

Bayard, B. & Jolly, C. (2006). Environmental behavior structure and socio-economic conditions of hillside farmers: A multiple-group structural equation modeling approach.

Ecological Economics62 (2007) 433–440

BBC (2013). Reform of EU Farm Policy. http://www.bbc.com/news/world-europe-11216061 (accessed 17.4.2015)

Beedell, J.D.C. & Rehman, T. (1999). Explaining farmers’ conservation behaviour: Why do farmers behave the way they do?Journal of Environmental Management (1999) 57, 165– 176 ͒

Bennet, R., Meister, A. & Wilkinson, R. (1999). Sustainable soil management in New

Zealand: Farmer beliefs, attitudes and motivations. Discussion Paper in Natural Resource and Environmental Economics No. 21. Centre for Applied Economics and Policy Studies, Massey University, Palmerston North New Zealand

Berg, B.L. (2007).Qualitative Research Methods for the Social Sciences.Pearson Education Inc., United States of America.

Berg, B.L. & Lune, H. (2012). Qualitative Research Methods for the Social Sciences.Pearson Education, Inc., United States of America

Botha, Dr C.A.J. (2009). STATEMENT OF EVIDENCE BY Dr Neels Botha ON BEHALF OF FISH AND GAME WELLINGTON hearings on submissions concerning the proposed One Plan – FARMS Strategy section notified by the Manawatu- Wanganui Regional Council Brouwer, F., Baldock, D. Carpentier, C., Dwyer, J., Ervin, D., Fox, G., Meister, A. & Stringe, R. (2000). Comparison of environmental and health-related standards influencing the relative competitiveness of ͒-à-vis main competitors in the world market. The ( 8 DJULFXOWXUHYLV Hague, Agricultural Economics Research Institute (LEI), 2000 ͒5 HSRUW Brundtland Report 1987

Burrell, M., Blight, M., Moore, D. & Cheng, Dr. W. (2006). Impacts on the business

environment of the Resource Management Act. Retrieved from

http://www.med.govt.nz/sectors-industries/energy/pdf-docs-library/energy-and-the- environment/the-role-of-the-rma/rma-impacts-legc-report.pdf (accessed 2.5.2013)

Chand, M., Sharma, D.D. & Gupta, R. (2011). Enhancing the adoption of farm technology – A conceptual model. Journal of Farm Sciences1(1) : 89-95, 2011

Cassells, S.M. & Meister, A.D. (2001).Cost and trade impacts of environmental regulations: effluent control and the New Zealand dairy sector. Retrieved from http://economics-

finance.massey.ac.nz/publications/discuss/dp00-08.pdf (accessed 22.1.2013)

Christensen, C.L., Hedley, M.J., Hanly, J.A. & Horne, D.J. (2012).Three years of duration- controlled grazing: what have we found?Fertilizer and Lime Research Centre, Massey University. Retrieved from

www.massey.ac.nz/~flrc/Research%20Articles/Christensen_2012.pdf (accessed 28.9.2012)

Collis, J. & Hussey, R. (2003). Business Research. Palgrave MacMilllan, Great Britain.

Cooper, D.R. & Schindler, P.S. (2008). Business Research Methods. McGraw-Hill/Irwin, New York.

Crosthwaite, J., MacLeod, N. & Malcolm, B. (1997).Case studies: 'theory and practice in agricultural economics.Retrieved from

http://ageconsearch.umn.edu/bitstream/135749/1/fiche005-report047.pdf (accessed 3.4.2013)

Dairy NZ (2008). Retrieved from http://www.dairynz.co.nz (accessed 28.9.2012)

de Klein C. A. M. & Ledgard S. F. (2001). A simulation of environmental and economic implications of nil or restricted grazing systems designed to reduce nitrate leaching from New Zealand dairy farms. I. Nitrogen losses.New Zealand Journal of Agricultural Research 44,

Defra (2008).Understanding Behaviours in a Farming Context: Bringing theoretical and applied evidence together from across Defra and highlighting policy relevance and

implications for future research.November 2008 ͒' HIUD$ JULFXOWXUDO& KDQJ Environment Observatory Discussion Paper. Retrieved from

http://archive.defra.gov.uk/evidence/statistics/foodfarm/enviro/observatory/research/document s/ACEO%20Behaviours%20Discussion%20Paper%20(new%20links).pdf (accessed

19.9.2012)

DFID & Pretty, J. (2004).Agricultural Sustainability. Retrieved from http://dfid-agriculture- consultation.nri.org/summaries/wp12.pdf (accessed 3.10.2012)

Drewry, J.J.; Cameron, K.C. & Buchan, G.D. (2008). Pasture yield and soil physical property responses to soil compaction from treading and grazing — a review. Soil Research 46(3) 237– 256

Durpoix, D. (2010).Farmers’ attitudes and behavior towards the natural environment: a New Zealand case study. Thesis Massey University, Palmerston North, New Zealand.

Edwards-Jones, G. (2006). Modelling farmer decision-making: concepts, progress and challenges. Animal Science2006, 82: 783–790

European Commission (2012). Retrieved from

http://ec.europa.eu/environment/water/water-nitrates/index_en.html (accessed 17.5.2013)

European Commission (2013). Retrieved from

http://www.gr2014parliament.eu/Portals/6/PDFFILES/NA0113090ENC_002.pdf (accessed 21.1.2015)

European Commission (2013a) Retrieved from http://ec.europa.eu/agriculture/policy- perspectives/policy-briefs/05_en.pdf (accessed 22.1.2015)

European Commission (2013b) Overciew of CAP Reform 2014 – 2020

http://ec.europa.eu/agriculture/policy-perspectives/policy-briefs/05_en.pdf (accessed 17.4.2015)

European Commission (2014). Retrieved from http://europa.eu (accessed 21.1.2015)

European Parliament (2014). Retrieved from http://www.europarl.europa.eu (accessed 22.1.2015)

European Commission (2014c). Retrieved from

European Commission (2015). Retrieved from http://ec.europa.eu/agriculture/external- studies/farmer-costs-2014_en.htm(accessed 20.8.2015)

Falconer, K. (2000). Farm-level constraints on agri-environmental scheme participation: a transactional perspective. Journal of Rural StudiesVolume 16, Issue 3, July 2000, Pages 379– 394

Federated Farmers Revised Regulatory Standards Bill (2012). Retrieved from http://oldsite.fedfarm.org.nz/f3236,149705/120914_Revised_Regulatory_Standards_Bill.pdf

(accessed 11.3.2013)

Federated Farmers NZ Booklet. (n.d.).Lets Make it Work: why the resource management act must change.Retrieved from www.fedfarm.org.nz/files/FFNZ-RMA-Booklet-final-

version.pdf (accessed 10.3.2013)

Federated Farmers of New Zealand. (2012). Retrieved from www.fedfarm.org.nz/ourwork (accessed 15.4.2012)

Federated Farmers of New Zealand. (2013).Discussion Document – Improving our Resource Management System.Retrieved from http://www.fedfarm.org.nz/files/130402-Discussion- Document-Improving-our-RM-system.pdf (accessed 20.5.2013)

Federated Farmers of New Zealand (2014a). National Policy. Retrieved from

www.fedfarm.org.nz/advocacy/National-Policy/Rights-in-Property.asp (accessed 16.11.2014)

Federated Farmers of New Zealand (2014b). Resource Management Act.

www.fedfarm.org.nz/advocacy/Work-in-Progress/Resource-Management-Act.asp (accessed 27.11.2014)

Federated Farmers of New Zealand (2014c). Free trade's role in growing New Zealand. http://www.fedfarm.org.nz/publications/speeches/article.asp (accessed 12.4.2015)

Federated Farmers of New Zealand (2014d). Rural Mental Health.

ww.fedfarm.org.nz/advocacy/National-Policy/Rural-Mental-Health.asp (accessed 28.2.2015) Firth, H.M., Williams, S.M., Herbison, G.P. & McGee, R.O. (2006). Stress in New Zealand farmers. Stress and Health 23: 51–58 (2007)

French, J.H. (1995). Farm household decision making and extension framework for understanding farm household-level decision making and design of agroforestry extension strategies. Retrieved from www.fao.org/DOCREP/x0266e/x0266e.htm (accessed 4.4.2012)

Gallaway Cook Allan, 2014. Indigenous Vegetation Clearance: Cancellation Of Interim Enforcement Order. Retrieved from www.gallawaycookallan.co.nz/library/news/indigenous- vegetation-clearance-cancella

Gardner, J. (2007).Challenges Facing agriculture in New Zealand.

Massey University, Palmerston North, New Zealand. Retrieved from http://www.ifmaonline.org/pdf/congress/07Gardner.pdf (accessed 7.7.2012)

Gasson, R. & Potter, C. (1988). Conservation through land diversion: a survey of farmers’ attitudes. Journal of Agricultural Economics Volume 39, Issue 3, pages 340–351, September 1988

Gray, D.I. (2001). The Tactical Management Processes used by Pastoral-Based dairy Farmers: A Multiple-Case Study of Experts.Thesis Massey University, Palmerston North, New Zealand.

Greer, G. (2008).The Socio-Economic Status of the South Island High Country

Research Report No. 306 May 2008. Retrieved from

http://www.lincoln.ac.nz/Documents/4459_RR306_s15065.pdf (accessed 25.2.2013)

Guerin, L.J. & Guerin, T.F. (1994). Constraints to the adoption of innovations in agricultural research and environmental management: a review. Australian Journal of Experimental Agriculture, 1994, 34, 549-71

Harcombe, M., Federated Farmers, NZPI (2007). Conference Paper, p. 1 POLICY

PROTECTION PRODUCTION: IS THE RMA ENABLING SUSTAINABLE AGRICULTURE?

Retrieved from http://www.earoph.info (accessed 11.2.2013)

Henle, K., Alard, D., Clitherow, J., Cobb, P., Firbank, L., Kull, T., McCracken, D., Moritz, R.F.A., Niemela, J. Rebane, M., Wascher, D., Watt, Q. & Young, J. (2008). Identifying and managing the conflicts between agriculture and biodiversity conservation in Europe–A review.

Agriculture, Ecosystems & EnvironmentVolume 124, Issues 1–2, March 2008, Pages 60–71

Herzon, I. & Mikk, M. (2005). Farmers’ perceptions of biodiversity and their willingness to enhance it through agri-environment schemes: A comparative study from Estonia and Finland.

Journal for Nature Conservation15 (2007) 10—25

Hines, J.M., Hungerford, H.R. & Tomera, A.N. (1987). Analysis and Synthesis of Research on Responsible Environmental Behavior: A Meta-Analysis. The Journal of Environmental

Education,18:2, 1-8

Hughey, K.F.D., Kerr, G.N. and Cullen, R. (2010). Public Perceptions of New Zealand’s Environment: 2010. EOS Ecology, Christchurch. vi+115 pp. ISSN 2230-4967

Hutching, G. (2014). N.Z. Farmer.co.nz. www.stuff.co.nz/business/farming/.../Farmer- suicides-raise-alarm (accessed 12.2.2015)

IFCN Dairy Network (2015). Retrieved from http://www.ifcndairy.org/en/start/index.php (accessed 20.8.2015)

Jarvis, P. & Wilkinson, R. (1998). Survey of Compliance Cost of New Zealand Farmers: A Study of Costs and an Exploration of Issues. Ministry of Agriculture and Forestry, Policy Information Paper no. 24.

Kabii, T. & Horwitz, P. (2006). A review of landholder motivations and determinants for participation in conservation covenanting programmes. Environmental Conservation 33(1): 11–20

Kaine, G., Murdoch. H., Lourey, R. & Bewsell, D. (2010). A framework for understanding individual response to regulation.Food Policy 35, 531–537

Kollmus, A. & Agyeman, J. (2002). Mind the Gap: Why do people act environmentally and what are the barriers to pro-environmental behavior? Environmental Education Research, 8:3, 239-260

Ledgard, S.F., De Klein, C.A.M., Crush, J.R. & Thorrold, B.S. (2000). Dairy farming,

nitrogen losses and nitrate-sensitive areas. Proceedings of the New Zealand Society of Animal Production 60: 256-260

Leite & Marks (2005) http://www.aiaee.org/attachments/article/174/Leite%2012.1-6.pdf Look at http://www.oecd.org/dataoecd/15/28/33913449.pdf (accessed 3.4.2013)

Lemon, M. & Park, J. (1993). Elicitation of Farming Agendas in a Complex Environment.

Journal of Rural Studies, volume 9, no. 4, 405-410

Marshall, C. & Rossman, G.B. (2006). Designing Qualitative Research. Sage Publications, inc., United States of America

Mathijs, E. (2003). Social capital and farmers’ willingness to adopt countryside stewardship schemes.Outlook on AgricultureVol 32, No 1

Mattison, E.H.A. & Norris, K. (2006). Bridging the gaps between agricultural policy, land-use and biodiversity. Trends in Ecology and Evolution Vol. 20, pp 610-616

May, Lord P. (2005) Regulation and Compliance Motivations: Examining Different Approaches. Public Administration ReviewJanuary/February 2005, Vol. 65, No. 1

McGregor, J., Willock,J., Dent, B.,Deary, I., Sutherland, A., Gibson, G., Morgan, O., & Grieve, B. (1996). Links Between Psychological Factors And Farmer Decision Making Farm Management,volume 9, no. 5, 228-239

Melyukhina, O. (2011), “Risk Management in Agriculture in New Zealand”, OECD Food, Agriculture and Fisheries Working Papers,No. 42, OECD Publishing. doi:

10.1787/5kgj0d3vzcth-en

Mills, J., Gaskell, P., Reed, M., Short, C., Ingram, J., Boatman, N., Jones, N., Conyers, S., Carey, P., Winter, M., and Lobley, M (2013) Farmer attitudes and evaluation of outcomes to on-farm environmental management. Report to Department for Environment, Food and Rural Affairs (Defra). CCRI: Gloucester

Ministry for the Environment. (1996).Sustainable Land Management: A strategy for New Zealand. Wellington: Ministry for the Environment. Retrieved from www.mfe.govt.nz (accessed 3.10.2012)

Ministry for the Environment (2001). Our Clean Green Environment – What’s it worth? Retrieved from http://www.mfe.govt.nz/publications/sus-dev/clean-green-image-value- aug01/summary-leaflet-aug01.pdf (accessed 3.10.2012)

Ministry for the Environment (2007). Environment New Zealand 2007. Retrieved from http://www.mfe.govt.nz/publications/ser/enz07-dec07/ (accessed 3.10.2012)

Ministry for the Environment (2007). Growth and Innovation Advisory Board 2004. Retrieved from http://www.mfe.govt.nz/publications/ser/enz07-dec07/html/chapter2-

environment/page4.html (accessed 3.10.2012).

Ministry for the Environment (2009). Retrieved from

http://www.mfe.govt.nz/publications/rma/everyday/overview/ (accessed 6.10.2012)

Ministry for the Environment (2011). Retrieved from http://www.mfe.govt.nz (accessed 6.10.2012).

Ministry for the Environment (2012). Retrieved from http://www.mfe.govt.nz (accessed 6 October 2012)

Ministry for the Environment (2013). Retrieved from

http://www.mfe.govt.nz/rma/reform/phase-two/2013-consultation.html (accessed 10.5.2013).

Ministry for the Environment (2013a). Retrieved from

http://www.mfe.govt.nz/publications/water/waitaki-impacts-irrigation-feb05/html/page1.html (accessed 23.10.2013)

Ministry for the Environment (2014). Retrieved from http://www.mfe.govt.nz/fresh- water/national-policy-statement/about-nps (accessed 22.1.2015)

Ministry for Primary Industries (2012). Retrieved from www.mpi.govt.nz/environment- natural-resources (accessed 12.11.2014)

Mulcock, C. & Ensor, A. (1998).Facts at their Fingertips : K nowl ed ge and Skills for S usta inable Lan d Ma nag ement i n Sout h Islan d Hill and Hi gh Countr y.

Retrieved from http://maxa.maf.govt.nz/mafnet/rural-nz/sustainable-resource-use/best- management-practices/facts/facts.htm (accessed 3.10.2012).

National Pesticide Information Center (2016). Soil and Pesticides. Retrieved from npic.orst.edu (accessed 29 May 2016)

New Zealand Government (2015). RMA reform agenda outlined.Retrieved from www.beehive.govt.nz/release/rma-reform-agenda-outlined(accessed 10 August 2015).

New Zealand Ministry of Health. (2008). Drinking-water standards for New Zealand 2005.Wellington, New Zealand. Retrieved from

http://www.health.govt.nz/publication/drinking-water-standards-new-zealand-2005-revised- 2008-0 (accessed 7.6.2013).

NZ Sustainable Agriculture (2011).

OECD (1997). Environmental Benefits from Agriculture. The Helsinki Seminar. OECD Publicatons, France.

OECD (1999).Environmental Indicators for Agriculture,volumes 1 & 2. Retrieved from http://www.oecd.org/greengrowth/sustainable-agriculture/40680795.pdf and

http://www.oecd.org/tad/sustainable-agriculture/40680860.pdf (accessed 17.3.2012).

OECD (2003).Agricultural Policies in OECD Countries: Monitoring and Evaluation 2003.

Retrieved from http://www.oecd.org/agriculture/agricultural-policies/2956135.pdf (accessed 8.10.2012).

OECD (2004). Agriculture and the Environment: Lessons Learned from a Decade of OECD Work.Retrieved from http://www.oecd.org/dataoecd/15/28/33913449.pdf (accessed

17.3.2012)

OECD (2007). OECD Environmental Performance Review of New Zealand.Retrieved from http://www.oecd.org/environment/country-reviews/37915514.pdf (accessed 27.9.2012)

OECD (2010),Guidelines for Cost-effective Agri-environmental Policy Measures, OECD Publishing. Retrieved from doi: 10.1787/9789264086845-en (accessed 25.7.2012)

Ohlmer, B., Olson, K., & Brehmer, B. (1998). Understanding farmers' decision making processes and improving managerial assistance. Agricultural

Oram, R. (2007).The Resource Management Act: Now and in the Future. Retrieved from mg2.scoop.co.nz/media/pdfs/0705/RMA__Oram_Paper_May_2007.pdf. (accessed 20.4.2012)

Parliamentary Commissioner for the Environment (2004).Growing for Good. Retrieved from http://www.pce.parliament.nz/assets/Uploads/Growing-for-Good.pdf (accessed 3.10.2012)

Parliamentary Commissioner for the Environment (2004).Incentives for Intensification. Retrieved from http://www.pce.parliament.nz/assets/Uploads/Reports/pdf/Gfg_bk_2.pdf (accessed 3.10.2012)

Parliamentary Counsel Office.Resource Management Act 1991. Retrieved from

www.legislation.govt.nz/act/public/1991/0069/latest/DLM230265.html (accessed 3.10.20120

Patton, M.Q. (2002). Qualitative Research & Evaluation Methods. Sage Publications, inc., United States of America

Pedersen, C. (2013). Charlie Pedersen: Missionaries who despise mankind. Retrieved from http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10391858 (accessed 4.5.2013)

Russillo, A. & Pinter, L. (2009).Linking Farm-Level Measurement Systems to Environmental Sustainability Outcomes: Challenges and Ways Forward.Retrieved from

http://www.iisd.org/pdf/2009/linking_farm_level_measurement_systems.pdf (accessed 3.10.2012)

Salmon, G., Sundström, M., & Zilliacus, K. (2005).Environmental Management and Natural Resource Allocation Frameworks of New Zealand, Sweden and Finland:

A Comparative Description.Ecologic Research Report No 1, June 2005

Schoon, B. & Te Grotenhuis, R. (2000). Values of farmers, sustainability and agricultural policy. Journal of Agricultural and Environmental Ethics 12: 17–27, 2000.

Simkin, S., Hawton, K., Fagg, J. & Malmberg, A. (1998). Stress in Farmers: a survey of farmers in England and Wales. Occup Environ Med1998 55: 729 – 734

Sposer, N. (2011).Farmers stressed by environmental rules.Radio New Zealand news. Retrieved from http://www.radionz.co.nz/news/rural/87146/farmers-stressed-by- environmental-rules (accessed 23.2.2013)

Stake, R.E. (1995). The Art of Case Study Research. Sage Publications, Inc. United States of America.

Treasury, 2006.IMD’s World Competitiveness Yearbook. (2006). Retrieved from www.treasury.govt.nz. (accessed 19.5.2013)

University of California n.d. Retrieved from http://www.universityofcalifornia.edu (accessed 17.3.2012)

University of Minnesota (2012). Soil Compaction: Causes, Effects, and Control.Retrieved from www.extension.umn.edu/distribution/cropsystems/components/3115s01.html#section1 (accessed 8 October 2012)

University of Woollongong (n.d. ). Market Based Solutions. Retrieved from

http://www.uow.edu.au/~sharonb/STS300/market/pricing/typeinfo.html (accessed 4.5.2013)

van der Werf , H.M.G. & Petit, J. (2002). Evaluation of the environmental impact of agriculture at the farm level: a comparison and analysis of 12 indicator-based methods.

Agriculture, Ecosystems & EnvironmentVolume 93, Issues 1–3, December 2002, Pages 131– 145

Vanslembrouck, I., Van Huylenbroeck, G. & Verbeke, W. (2002). Determinants of the Willingness of Belgian Farmers to Participate in Agri-environmental Measures.Journal of Agricultural EconomicsVolume 53, Number 3 November 2002 Pages 489-511

Walker, I. (2012).Brakes on Economy.Retrieved from

www.newzealandfarmers.com/Media_Release_and_Articles.cfm?NewsID=62 (accessed 19.5.2013)

Waterfield, B. (2014). Retrieved from

http://www.telegraph.co.uk/news/worldnews/europe/germany/11150018/Bavarian-farmer- puts-nappies-on-his-cows-in-EU-protest.html (accessed 22.1.2015)

Waugh, N. (2011).Farmer Adaptation to Change with the Threat of Regulation – The Carrot or the Stick?A Report for the New Zealand Nuffield Farming Scholarship Trust. Retrieved from www.nuffield.org.nz/2011%20-%20Nicola%20Waugh%20-%20Nuffield%20Report%202011.pdf. (accessed 7.7.2012)

Webster, P. & Williams, N. (2002).Environmental Cross Compliance – Panacea or Placebo?

Paper prepared for presentation at the 13th International Farm Management Congress, Wageningen, The Netherlands, July 7-12, 2002. Retrieved from

http://ageconsearch.umn.edu/bitstream/7004/2/cp02we01.pdf (accessed 4.5.2013)

Willock, J., Deary, I.J., Edwards-Jones, G., Gibson, G.J., McGregor, M.J., Sutherland, A., Dent, J.B., Morgan, O. and Grieve, R. (1999).The Role of Attitudes and Objectives in Farmer Decision Making: Business and Environmentally- Oriented Behaviour in Scotland.Journal of Agricultural Economics, volume 50, no. 2, 286-303

Wilson, H.C. (2001).Survey of Regional Council River Water Quality Monitoring

Programmes.Retrieved from www.mfe.govt.nz/publications/ser/tech-report-70-freshwater- nov01.pdf (accessed

World Bank (2012). Retrieved from http://data.worldbank.org/indicator/AG.LND.AGRI.ZS (accessed 9 October 2012)

Yin, R.K. (2003). Case Study Research Design and Methods. Sage Publications, Inc., United States of America.

Yin, R.K. (2009).Case Study Research Design and Methods. Sage Publications, Inc., United States of America.

Yin, R.K. (2011)Qualitative Research from Start to Finish.The Guildford Press, United States of America

Yin, R. K. (2012). Applications of Case Study Research. Sage Publications, Inc., United States of America

Yin, R.K. (2014). Case Study Research Design and Methods. Sage Publications, Inc., United States of America

In document Propuesta de un programa para la prevención de caída de objetos en torres de Workover para la compañía Petroland S A S (página 50-55)