The influence of nitrogen fertilization and plant population density on yield and yield components of three grain sorghum varieties [microform].
| Egile nagusia: | |
|---|---|
| Formatua: | Visual Material |
| Hizkuntza: | English |
| Argitaratua: |
Quezon City
Photoduplication Service, University of the Philippines Library
1980.
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| Gaiak: |