The American family in transition to the solar age.
Zimmerman
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D000569:Americas; D003710:Demography; D019049:Developed Countries; D004467:Economics; D005191:Family Characteristics; D009656:North America; D012922:Social Change; D012942:Social Sciences; D014481:United States
Americas; Demography; Developed Countries; Economic Factors; Family And Household; Historical Demography; North America; Northern America; Social Development; Social Sciences; United States