TY  - BOOK
TI  - The Philippines recommends of soil fertility management
SN  - 9712004570
U1  - Fil. (R) 631.422 P538 
PY  - 2006///
CY  - Laguna
PB  - Philippine Council for Agriculture Forestry and Natural Resources Research and Development
KW  - Soil fertility--Philippines
KW  - Soil management--Philippines
KW  - Soil productivity--Philippines
ER  -