China's census. National count reveals major societal changes.
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D000375:Aging; D019352:Censuses; D002681:China; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D011156:Population Density; D011157:Population Dynamics; D012424:Rural Population; D012744:Sex Ratio; D014505:Urban Population