Columbia subject headings:
Census--Bibliography--Microform catalogs.
Microforms--Catalogs.
Publishers' catalogs--United States.
Research Publications, inc.--Microform catalogs.
Harvard subject headings:
Census--Bibliography--Microform catalogs.
Microforms--Catalogs.
Publishers' catalogs--United States
Research Publications, inc--Microform catalogs.
Princeton subject headings:
Demography--Statistics--Sources--Indexes.
International population census publications. Series II, Pre-1945--Indexes.
Population--Statistics--Sources--Indexes.