Nitrogen availability in five soils under different management systems and its effects on growth and yield of rice [microform]
| المؤلف الرئيسي: | |
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| التنسيق: | Visual Material |
| اللغة: | English |
| منشور في: |
Quezon City
Photoduplication Service,University of the Philippines library
1976.
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| الموضوعات: |