Comparative economic analysis of low-lift (surface) and tubewell irrigation projects in the Philippines [microform]
| المؤلف الرئيسي: | |
|---|---|
| التنسيق: | Visual Material |
| اللغة: | English |
| منشور في: |
Quezon City
Photoduplication Service, University of the Philippines
1976.
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| الموضوعات: |