TY  - BOOK
AU  - Ryan,J G ,ed.
TI  - Socioeconomic constraints to development of semi-arid tropical agriculture
U1  - 338.109154/RYA 
PY  - 1980///
CY  - Andhra Pradesh
PB  - International Crops Research Institute for the Semi-Arid Tro
KW  - Agriculture
KW  - Arid regions agriculture
ER  -