State of the art nonmetallic minerals : fertilizer research.
| Formatua: | Liburua |
|---|---|
| Hizkuntza: | English |
| Argitaratua: |
Los Banos, Laguna
Philippine Council for Agriculture and Resources Research and Development
1986.
|
| Saila: | State of the art series. Mines series Philippine Council for Agriculture and Resources Research and Development
no. 4/1986 |
| Gaiak: |