http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1988 population and 1987 per capita income estimates for counties and incorporated places
East North Central: 1988 population and 1987 per capita income estimates for counties and incorporated places
No longer available for sale by the Supt. of Docs.
Current population reports. no. 88-ENC-SC