Teenage pregnancy and fertility in the United States, 1970, 1974, and 1980.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D005260:Female; D006801:Humans; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D013997:Time Factors; D014481:United States; D044465:White People