1 电子书 Dr Thomas S. Walker
Jeffrey (Virginia Polytechnic Institute and State, USA) Alwang & Dr Thomas S. Walker: Crop Improvement, Adoption and Impact of Improved Varieties in Food Crops in Sub-Saharan Africa
Following on from the CGIAR study by Evenson and Gollin (published by CABI in 2003), this volume provides up-to-date estimates of adoption outcomes and productivity impacts of crop variety improvemen …
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DRM
€187.07
