TY  - BOOK
AU  - Sanchez, Fedro A.
TI  - Properties and management of soils in the tropics
U1  - 631.412.008.2(213) L6 
PY  - 1976///
CY  - New York
PB  - John Wiley
KW  -  Fedro A. Sanchez
KW  - Soil composition-tropics,Plant-Soil relationship,Farm management-tropics
ER  -