A test of the child replacement hypothesis: nineteenth century Massachusetts.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005191:Family Characteristics; D005260:Female; D005298:Fertility; D007722:Health Knowledge, Attitudes, Practice; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D008404:Massachusetts; D010298:Parity