TY  - JOUR
A1  - Westoff, C. 
T1  - Differential Fertility in the United States: 1900 to 1952
Y1  - 1954
DO  - 10.2307/2087793
JF  - American Sociological Review
VL  - 19
IS  - 5
SP  - 549
EP  - -561

ER  -