Resource productivity estimated for lowland rice farms of Laguna Province, 1961-1962 [microform]
| Prif Awdur: | |
|---|---|
| Fformat: | Visual Material |
| Iaith: | English |
| Cyhoeddwyd: |
Quezon City
Photoduplication Service,University of the Philippines Library
1976.
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| Pynciau: |