U.S. Census Bureau, Current Population Reports,
P20-553 and earlier reports; and
“America’s Families and Living Arrangements: 2006”;
published 27 March 2007;
< http://www.census.gov/population/www/socdemo/hh-fam/cps2006.html >.
For more information:
http://www.census.gov/population/www/
referenced on dataset section Notes (#2)
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