Columbia subject headings:
Copyright and electronic data processing--United States.
Copyright--Electronic information resources--United States.
Copyright--Government policy--United States.
Harvard subject headings:
Copyright and electronic data processing--United States.
Copyright--Government policy--United States.
Copyright--United States--Electronic information resources.
United States. Digital Millenium Copyright Act.
Princeton subject headings:
Copyright and electronic data processing--United States.
Copyright--Electronic information resources--United States.
Copyright--Government policy--United States.