The effect of insecticides, species diversity and nitrogen fertilizer on insect infestation and yield of cotton [microform].
| Prif Awdur: | |
|---|---|
| Fformat: | Visual Material |
| Iaith: | English |
| Cyhoeddwyd: |
Quezon City
Photoduplication Service, University of the Philippines Library
1977.
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| Pynciau: |