TY  - JOUR
A1  - Bloom, D.E.
T1  - What's happening to the age at first birth in the United States? A study of recent cohorts
Y1  - 1982
DO  - 10.2307/2060976
JF  - Demography
VL  - 19
IS  - 3
SP  - 351
EP  - -370

ER  -