Family growth, household density, and moving.
D000328:Adult; D002648:Child; D003691:Delaware; D005191:Family Characteristics; D005260:Female; D006798:Housing; D006801:Humans; D008297:Male; D008393:Marriage; D008875:Middle Aged; D009515:New Jersey; D010414:Pennsylvania; D011157:Population Dynamics; D012111:Residence Characteristics; D013997:Time Factors; D014505:Urban Population