"This reissue ... marks the thirtieth annivesary (1964-1994) of Marshall McLuhan's classic exposé on the state of the then-emerging phenomenon of mass media. ... In a new introduction ... Harper's editor Lewis H. Lapham reevaluates McLuhan's work in the light of the technological as well as the political and social changes that have occurred in the last part of this century."--Back cover
Seventh printing, 1998.