The effects of extension and technical knowledge on farmer productivity in Nueva Ecija, Philippines [microform]
| المؤلف الرئيسي: | |
|---|---|
| التنسيق: | Visual Material |
| اللغة: | English |
| منشور في: |
Quezon City
Photoduplication Service. University of the Philippines Library
1980.
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| الموضوعات: |