TY  - BOOK
AU  - Dagoon,Jesse D.
AU  - Sangatanan, Pedro D.
TI  - Soils, fertilizers and crops: basic principles of crop production in the tropics 
SN  - 9712306305
PY  - 1990///
CY  - Manila
PB  - Rex Book Store
KW  - *Soils
KW  - Fertilizers
KW  - Soil fertility
ER  -