TY  - BOOK
AU  - Sanchez, Pedro A. 
TI  - Properties and management of soils in the tropics
SN  - 0471752002
U1  - 631.4913 SAN 
PY  - 1976///.
CY  - New York : 
PB  - John Wiley, 
KW  - Properties
KW  - Management
ER  -