TY  - GEN
AU  - Clark,John Desmond
TI  - The spread of food production in sub-Saharan Africa
U1  - 338.1967 21E
KW  - AGRICULTURE
KW  - ETUDE ECONOMIQUE
KW  - PRODUCTION AGRICOLE
KW  - ALIMENTATION
KW  - AFRIQUE SUBSAHARIENNE
N1  - Bibliogr. p. 11-13
ER  -