TY  - BOOK
AU  - Norman, David W.
AU  - Newman, Mark D.
AU  - Ouedraogo, Ismael.
TI  - Farm and village production systems in the semi-arid tropics of west Africa ; an interpretative review of research
T2  - Research bulletin
U1  - 631.5 
PY  - 1981///
CY  - Patancheru
PB  - International Crops Institute for the Semi-Arid Tropics
KW  - Agricultura
KW  - Trópicos
KW  - Sistemas de cultivo
ER  -