Columbia subject headings:
Harvard subject headings:
Legislation--United States--Periodicals.
Periodicals
United States--Politics and government--20th century--Periodicals.
United States. Congress--Voting--Periodicals.
Princeton subject headings:
Legislation--United States--Periodicals.
Periodicals.
United States--Politics and government--1974---Periodicals.
United States. Congress--Voting--Periodicals.