TY  - BOOK
AU  - Singh, R. Paul
ED  - Stewart, B.A.
ED  - Parr, J F 
TI  - Dryland agriculture : strategies for sustainability
SN  - 0387972048
U1  - 630.9154 
PY  - 1990///
CY  - New York : 
PB  - Springer-Verlag
ER  -