McLuhan, Marshall, 1911-1980. Understanding media : the extensions of man / Extensions of man by Marshall McLuhan. - London : Routledge & Kegan Paul ltd., c1964 [impression 1967]. - vii, 359 p. ; 22 cm. Subjects--Topical Terms: Mass media.Communication.Communication and technology. Dewey Class. No.: 301.2 / MCU 1967