Some observations on the irrigation of pechay using four different treatments in the Bulacan National Agricultural School [microform]
| Κύριος συγγραφέας: | |
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| Μορφή: | Visual Material |
| Γλώσσα: | English |
| Έκδοση: |
Quezon City
Photoduplication Service, University of the Philippines Library
1974.
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