Columbia subject headings:
Census of population and housing (1980)--Handbooks, manuals, etc.
Geographical location codes.
United States--Census, 1980--Handbooks, manuals, etc.
Harvard subject headings:
Census of population and housing (1980)--Handbooks, manuals, etc.
Geographical location codes
Reference works
United States--Census, 1980--Handbooks, manuals, etc.
Princeton subject headings:
Geographic location codes.