Observations on birth planning in China, 1977.
D000028:Abortion, Induced; D000328:Adult; D000367:Age Factors; D001723:Birth Rate; D002681:China; D003267:Contraception / Q000379:methods; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D009042:Motivation; D011247:Pregnancy; D011996:Records; D012922:Social Change; D013245:Sterilization, Reproductive