Norman, D., & Douglas, M. (1994). Farming systems development and soil conservation. Roma: FAO.
Citación estilo ChicagoNorman, David, and Malcolm Douglas. Farming Systems Development and Soil Conservation. Roma: FAO, 1994.
Cita MLANorman, David, and Malcolm Douglas. Farming Systems Development and Soil Conservation. Roma: FAO, 1994.
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