TY  - BOOK
AU  - Rattan Lal
TI  - Methods and guidelines for assessing sustainabale use of soil and water resources in the trpoics
SN  - 8172331460
U1  - 626.81(213) L14M 
PY  - 1996///
CY  - Jodhpur
PB  - Scientific Publishers
KW  - Soil and water, Crop productivity
ER  -