Williams, Brian K.,  1938- <br/><br/>
Using information technology :  a practical introduction to computers & communications / 
Brian K. Williams, Stacey C. Sawyer, Sarah E. Hutchinson. 
 - Second 
 - Chicago :  Irwin,  c1997. 
 - xxxvii, 602 p. :  ill. (some col.) ;  28 cm.