TY  - BOOK
AU  - Alberda , T  .
AU  - Keulen,H  .
AU  - Seligman,N G   .
AU  - Wit,C T  .
TI  - Food from dry lands : An entegrated approach to planning of agricultureal development / 
U1  - 630.301 
PY  - 1992///
CY  -  : 
PB  - Kluwer Academic Publishers , 
ER  -