TY  - JOUR
A1  - Bumpass, L.L.
T1  - The risk of an unwanted birth: The changing context of contraceptive sterilization in the U.S.
Y1  - 1987
DO  - 10.1080/0032472031000142946
JF  - Population Studies
VL  - 41
IS  - 3
SP  - 347
EP  - -363

ER  -