The educational effects on farmers of the pilot extension program on direct seeding of rainfed rice in Bulacan province, Philippines [microform]
| المؤلف الرئيسي: | |
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| التنسيق: | Visual Material |
| منشور في: |
Quezon City
Photoduplication Service. University of the Philippines Library
1978.
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| الموضوعات: |