TY  - BOOK
T1  - The proximate determinants of natural marital fertility.
T2  - Working papers / Population council. Center for Policy Studies
A1  - Bongaarts, John 1945-
LA  - English
PP  - New York
PB  - The Population Council
YR  - 1982
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217611578762
OP  - 44
CN  - HB 882 P66 no.89
KW  - Fertility, Human.
KW  - Birth intervals.
ER  -