Biological constraints to high yields in selected farmers' fields in Iloilo, Philippines [microform].
| المؤلف الرئيسي: | |
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| التنسيق: | Visual Material |
| اللغة: | English |
| منشور في: |
Quezon City
Photoduplication Service, University of the Philippines Library
1980.
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| الموضوعات: |