00728nam a2200193Ia 4500003000600000005001700006008004100023020001700064040002500081082003600106100006400142245014800206260005000354300002700404500003100431650001400462650003100476650002700507NORSU20240301011815.0240215s9999    xx            000 0 und d  a0-256-209804  aNORSU-DumcNORSU-Dum  a004 Sa9 1997 C12Second edition  aSawyer, Stacy C., Williams, Brian K. & Hutchinson, Sarah E. 0aUsing Information TechnologybA Practical Introduction to Computers & CommunicationscStacy C. Sawyer, Brian K. Williams, & Sarah E. Hutchinson  bThe McGraw-Hill Companies, Inc.c1997aBoston  axxx, 330 pages, 28 cm.  aIncludes summary and index  aComputers  aTelecommunications systems  aInformation technology