Columbia subject headings:
Digital television--Government policy--United States.
High definition television--Government policy--United States.
Television broadcasting policy--United States.
Harvard subject headings:
Digital television--Government policy--United States.
High definition television--Government policy--United States.
Television broadcasting policy--United States
Princeton subject headings:
Digital television--Government policy--United States.
High definition television--Government policy--United States.
Television broadcasting policy--United States.