00310nam a22001217a 450000500170000000800410001704000130005808200220007110000200009324500340011326000330014730000080018020180710113227.0180710b        xxu||||| |||| 00| 0 eng d  cPK-LaUMT  aMJC 301.24bTOF-F  aToffler , Alvin  aFuture shock /cAlvin Toffler  aNew York:bBantam bookc1972  a561