Extension in the Andes an evaluation of official U.S. assistance to agricultural extension services in Central and South America
| मुख्य लेखक: | |
|---|---|
| स्वरूप: | पुस्तक |
| भाषा: | English |
| प्रकाशित: |
Cambridge, Mass.
MIT Press
1974.
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| विषय: |