Geographic base (DIME) system :
a local program : conference proceedings, November 18 and 19, 1974, Columbus, Ohio.
Washington : For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Washington : U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of the Census, 
Rev. Nov. 1976.
Geographical location codes
Geographical location codes /
"Issued April 1975"
10 unnumbered pages, 111 pages :
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