http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Population estimates and ... per capita income estimates for counties, incorporated places, and selected minor civil divisions
U.S. Department of Commerce, Bureau of the Census.
1982 population estimates and 1981 per capita income estimates.
Per capita income estimates are provided for year preceding the year for the population estimates.
Current population reports. Series P-26, Local population estimates
Current population reports. no. 82-25-SC
Supt. of Docs., U.S. Govt. Print. Off., Washington, D.C. 20402