Mumford, Lewis. The pentagon of power / - New York : Harcourt Brace Jovanovich, c1970. - 496 pages : Illustrations; - His The myth of the machine, v. 2 A Harvest book, HB 274 . Includes index. ISBN: 0156716100 Subjects--Topical Terms: Technology and civilization. LC Class. No.: CB 478 / MUM