Columbia subject headings:
Politics, Practical.
United States--Politics and government--1981-1989.
United States. Congress. Senate.
Harvard subject headings:
Politics, Practical--United States
Politics, Practical.
United States--Politics and government--1981-1989.
United States--Politics and government--1989-
United States. Congress. Senate.
Princeton subject headings:
Politics, Practical.
United States--Politics and government--1981-.
United States. Congress. Senate