1970 census of population and housing;
geographic identification code scheme.
|Corporate Author:||United States.|
[Washington, For sale by the Supt. of Does., U.S. Govt. Print. Off.] 1972.
Punched card systems
Punched card systems /
"A United States Department of Commerce publication."
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|Full view||University of Minnesota|
|Full viewv.1||University of Michigan|
|Full viewv.2||University of Michigan|