求英文文献2篇

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1.Sherlund, Shane M., Barrett, Christopher B. and Adesina, Akinwumi A.,
Smallholder Technical Efficiency: Controlling for Environmental Production Conditions. Journal of Development Economics, Forthcoming. Available at SSRN: http://ssrn.com/abstract=358840
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=358840
2.Sustainable Agriculture: A Matter of Ecology, Equity, Economic Efficiency or Expedience?
David J. Pannell; Steven Schilizzi Journal of Sustainable Agriculture, 1540-7578, Volume 13, Issue 4, 1999, Pages 57 – 66 http://www.informaworld.com/smpp/ftinterface?content=a904702977&rt=0&format=pdf

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关键词：求英文文献 英文文献 informaworld Agriculture Sustainable 文献 英文

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