Columbia subject headings:
Copyright--Broadcasting rights--United States.
Fair use (Copyright)
Fair use (Copyright)--United States.
Freedom of information--United States.
Harvard subject headings:
Copyright--Broadcasting rights--United States.
Fair use (Copyright)
Fair use (Copyright)--United States.
Freedom of information--United States
Princeton subject headings:
Copyright--Broadcasting rights--United States.
Fair use (Copyright)--United States.
Freedom of information--United States.