TY  - BOOK
AU  - Sanchez, Pedro A.,
TI  - Properties and Management of Soils in the Tropics
SN  - 0471752002
U1  - 631 
PY  - 1976///
CY  - New York
PB  - John Wiley & Sons, Inc.
KW  - Soil Science
KW  - Techniques, equipment & materials
ER  -