Columbia subject headings:
Authorship--Collaboration--History.
Copyright--History.
Cultural industries--History.
Digital printing--History.
Digital rights management--History.
McLuhan, Marshall, 1911-1980--Criticism and interpretation.
Harvard subject headings:
Authorship--Collaboration--History.
Copyright--History.
Cultural industries--Law and legislation.
Digital printing--Law and legislation--History.
Digital rights management--History.
McLuhan, Marshall, 1911-1980. Gutenberg galaxy.
Princeton subject headings: