Columbia subject headings:
Broadcasting--Periodicals--Bibliography.
Broadcasting--Periodicals--History.
Motion pictures--Periodicals--Bibliography.
Motion pictures--Periodicals--History.
Harvard subject headings:
Broadcasting--Periodicals--Bibliography.
Broadcasting--Periodicals--History
Motion pictures--History--Periodicals
Motion pictures--Periodicals--Bibliography.
Princeton subject headings:
Broadcasting--Periodicals--Bibliography.
Broadcasting--Periodicals--History.
Motion pictures--History--Periodicals.
Motion pictures--Periodicals--Bibliography.