U.S. Census Bureau,
“Table 1: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2000 to July 1, 2006 (CBSA-EST2006-01)”
published 5 April 2007;
< http://www.census.gov/population/www/estimates/CBSA-est2006-annual.html >.
referenced on dataset section Data (#1)
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