The probable impact of the seed-fertilizer revolution on grain production and on farm labor requirements [microform]
| Egile nagusia: | |
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| Beste egile batzuk: | , |
| Formatua: | Visual Material |
| Hizkuntza: | English |
| Argitaratua: |
Quezon City
Photoduplication Service, University of the Philippines Library
1976.
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| Gaiak: |