Field demonstration its effects on level of knowledge, understanding and attitudes of farmers about choice of a rice variety and use of fertilizers
| मुख्य लेखक: | |
|---|---|
| स्वरूप: | Visual Material |
| भाषा: | English |
| प्रकाशित: |
Quezon City
University of the Philippines Library
1977.
|
| विषय: |