Directory farmer-leaders, researchers, development workers and organizations working towards upland development.
| Aineistotyyppi: | Kirja |
|---|---|
| Kieli: | englanti |
| Julkaistu: |
Laguna
Program on Environmental Science and Management, University of the Philippines at Los Baños
1983.
|
| Painos: | Second edition. |
| Aiheet: |