The probable impact of the seed-fertilizer revolution on grain production and on farm labor requirements [microform]
| 1. autor: | |
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| Kolejni autorzy: | , |
| Format: | Visual Material |
| Język: | English |
| Wydane: |
Quezon City
Photoduplication Service, University of the Philippines Library
1976.
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| Hasła przedmiotowe: |