Ceylon: the relationship of demographic factors and marital fertility to the recent fertility decline.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001723:Birth Rate; D003710:Demography; D005260:Female; D005298:Fertility; D006801:Humans; D008393:Marriage; D008875:Middle Aged; D009313:National Health Programs; D012189:Retrospective Studies; D013188:Sri Lanka