00644pamaa2200193 4500 0000019321 20070723090000.0 0256153507 (CD-ROM) 004 WIL QA76.5 WIL 1995 Williams Using information technology : a practical introduction to computers & communications Brian K. Williams, Stacey C. Sawyer, Sarah E. Hutchinson [ CD-ROM]. Chicago: Irwin, 1995.. 1compact disc; 5 in. Computers Information technology Telecommunication systems Sawyer, Stacey C. Hutchinson, Sarah E.