Authors: Darroch, JE Landry, DJ Oslak, S

Citation: Je. Darroch et al., Age differences between sexual partners in the United States, FAM PLAN PE, 31(4), 1999, pp. 160-167

Authors: Darroch, JE Landry, DJ Oslak, S

Citation: Je. Darroch et al., Pregnancy rates among US women and their partners in 1994, FAM PLAN PE, 31(3), 1999, pp. 122