title: Wanted and unwanted childbearing in the United States: 1968, 1969, and 1972 national natality surveys.
mesh_terms: D001723:Birth Rate; D002676:Child, Unwanted; D005260:Female; D006801:Humans; D008393:Marriage; D008423:Maternal Age; D010298:Parity; D011158:Population Growth; D011247:Pregnancy; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014481:United States