TY  - BOOK
TI  - The Philippines recommends for soil fertility management
SN  - 9710803107
AV  - F S 590 P538 1979 
PY  - 1979///
CY  - Los Ban╠âos, Laguna
PB  - Philippine Council for Agriculture and Resources Research and Development
KW  - Soil fertility
KW  - Soil management
ER  -