00768nam0-22002651i-450-99000046002040332120090519122334.0000046002FED01000046002(Aleph)000046002FED0100004600220020821d1973----km-y0itay50------baengy-------001yy<<A >>report on a study of selected regional computer networks in the United StatesFred W. Weingarten ...[et al.][s.l.s.n.]1973257 p.ill.28 cmReti di computerWeingarten,Frederick W.ITUNINARICAUNIMARCBK99000046002040332110 I 391119 CCEDINELDINELUNINA