TY  - BOOK
TI  - Sustainable agriculture: Issues, perspectives and prospects in semiarid tropics: Proceedings of the first International symposium on natural resources management for a sustainable agriculture Delhi. Feb 1990. V 2
U1  - 631 S 
PY  - 1990///
PB  - ISA
KW  - Crop genetic resources
KW  - Sustainable agriculture
ER  -