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Retos para el nuevo milenio en América Latina
Alfredo Sfeir-Younis, Gutiérrez Roberto Gabriel, Martínez Claudia · Tercer Mundo
157 sayfa · 1998
Sustainable development / Competition / Democracy / Politics and government
Land and soil management
Alfredo Sfeir-Younis · Westview Press
307 sayfa · 1993
Economic aspects / Economic aspects of Soil erosion / Evaluation / Soil conservation projects / Soil erosion