title: Regional variation in sterility, United States: 1970.
mesh_terms: D000328:Adult; D000367:Age Factors; D003710:Demography; D004522:Educational Status; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D008393:Marriage; D010298:Parity; D012959:Socioeconomic Factors; D013245:Sterilization, Reproductive; D014481:United States