Columbia subject headings:
Government publications--United States--Bibliography.
Government publications--United States--Indexes.
Library of Congress. Congressional Research Service--Bibliography.
Library of Congress. Congressional Research Service--Indexes.
Harvard subject headings:
Legislative reference bureaus--United States.
Library of Congress. Congressional Research Service--Bibliography.
United States--Politics and government--20th century--Sources--Indexes.
United States--Social conditions--1980---Sources--Indexes.
Princeton subject headings:
Government publications--United States--Bibliography.
Government publications--United States--Indexes.
Indexes.
Library of Congress. Congressional Research Service--Bibliography.
Library of Congress. Congressional Research Service--Indexes.