TY  - CHAP
A1  - Cohen, B. 
T1  - Fertility levels, differentials, and trends
Y1  - 1993
A3  - Foote, K.A.
A3  - Hill, K.H.
A3  - Martin, L.G. 
T2  - Demographic change in sub-Saharan Africa
CY  - Washington, D.C.
PB  - National Academy Press

ER  -