Joffler,Alvin Pouver-shift : knowledge wealth and violence at the edge of the 2.1 st century / Alivin Toffler . - New York; Toronto; London [etc] : Bantam books, cop.1990 . - XXII-585 p. ; 25 cm. Index ISBN: 9780553057768 0553057766 Universal Decimal Class. No.: 339.22