Alviar, M. (1996). Soil conservation as development policy. Universidad de Antioquia.
Chicago Style (17. basım) AtıfAlviar, Mauricio. Soil Conservation as Development Policy. Universidad de Antioquia, 1996.
MLA (9th ed.) AtıfAlviar, Mauricio. Soil Conservation as Development Policy. Universidad de Antioquia, 1996.
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