Columbia subject headings:
Aeronautics--Law and legislation--Periodicals.
Law--United States--Periodicals.
Radio--Law and legislation--Periodicals.
Harvard subject headings:
Aeronautics--Law and legislation--United States--Periodicals.
Radio--Law and legislation--United States--Periodicals.
Princeton subject headings:
Aeronautics--Law and legislation--Periodicals.
Periodicals.
Radio--Law and legislation--Periodicals.