Columbia subject headings:
Lobbyists--United States--Periodicals.
Pressure groups--United States--Directories.
Pressure groups--United States--Periodicals.
Public interest--United States--Societies, etc.--Periodicals.
Harvard subject headings:
Lobbyists--United States--Periodicals.
Pressure groups--United States--Directories.
Pressure groups--United States--Periodicals.
Public interest--United States--Societies, etc.--Periodicals.
Princeton subject headings:
Lobbyists--United States--Periodicals.
Pressure groups--United States--Directories.
Pressure groups--United States--Periodicals.
Public interest law--United States--Directories.
Public interest--United States--Directories.
Public interest--United States--Societies, etc.--Periodicals.