Columbia subject headings:
Artificial satellites in telecommunication--United States.
Copyright--Broadcasting rights--United States.
Telecommunication policy--United States.
Harvard subject headings:
Artificial satellites in telecommunication--United States.
Copyright--Broadcasting rights--United States.
Telecommunication policy--United States
Princeton subject headings:
Artificial satellites in telecommunication--United States.
Copyright--Broadcasting rights--United States.
Telecommunication policy--United States.