Trends and developments in social services for teen-age unmarried mothers.
D000293:Adolescent; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007086:Illegitimacy; D008427:Maternal Health Services; D011203:Poverty; D011247:Pregnancy; D012736:Sex Education; D012947:Social Work; D012959:Socioeconomic Factors; D014481:United States