Columbia subject headings:
Political participation--United States--Periodicals.
United States--Politics and government--1945-1989--Periodicals.
Harvard subject headings:
Political participation--United States--Periodicals.
United States--Politics and government--1945-1989--Periodicals.
Princeton subject headings:
Lobbying--United States--Periodicals.
United States--Politics and government--1977-1981--Periodicals.