TY  - BOOK
AU  - 
AU  - USDA,
TI  - Proceedings of an international workshop : sustainable land use systems research, New Delhi, India , February 12-16,1990
SN  - 8120406699
U1  - 631.4707 
PY  - 1992///
CY  - New Delhi
PB  - Oxford & IBH Publishing Co.Pvt.Ltd.
KW  - Soil science
ER  -