TY  - JOUR
A1  - Schirm, A.L., Trussell, J., Menken, J., and Grady, W.R. 
T1  - Contraceptive Failure in the United States: The Impact of Social, Economic and Demographic Factors
Y1  - 1982
DO  - 10.2307/2134816
JF  - Family Planning Perspectives 
VL  - 14

ER  -