Computers, communications, and information :
Clifford, Sarah Hutchinson.
Computers, communications, and information : a user's introduction / Sarah E. Hutchinson, Stacey C. Sawyer; with contributions by Glen J. Coulthard. - Rev. ed. - Boston : Irwin/McGraw-Hill, c1998. - 1 v. (various pagings) : ill. (some col.) ; 28 cm.
Computers, communications, and information : a user's introduction / Sarah E. Hutchinson, Stacey C. Sawyer; with contributions by Glen J. Coulthard. - Rev. ed. - Boston : Irwin/McGraw-Hill, c1998. - 1 v. (various pagings) : ill. (some col.) ; 28 cm.