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Sexual Activity, Contraceptive Use, and Childbearing of Teenagers Aged 15-19 in the United States
Gladys Martinez
Joyce C. Abma
出版
U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics
, 2015
URL
http://books.google.com.hk/books?id=EVN2AQAACAAJ&hl=&source=gbs_api
