Columbia subject headings:
Government publications--United States--Bibliography.
United States--Politics and government--Bibliography.
United States--Politics and government--Information services--United States.
Harvard subject headings:
Government publications--United States--Bibliography.
United States--Politics and government--Bibliography.
United States--Politics and government--Information services--United States.
Princeton subject headings:
Government publications--United States--Bibliography.
United States--Politics and government--Bibliography.
United States--Politics and government--Information services--United States.