TY  - BOOK
AU  - Norman, David W et al.
TI  - Farm and village production systems in the semi-arid tropics of West Africa
U1  - 338.10966/NOR 
PY  - 1981///
CY  - Hyderabad
PB  - International Crops Research Institute for the Semi-Arid Tro
KW  - Agriculture--Economic aspects
KW  - Arid regions agriculture
ER  -