FitzGerald, Jerry. creator Dennis, Alan. New York John Wiley c2002 7th ed. xiv, 457 p. : ill. ; 24 cm. Jerry FitzGerald, Alan Dennis. Includes index. Data transmission systems Computer networks Office practice Automation 004.6 047139100X http://www.loc.gov/catdir/toc/onix07/2001033013.html http://www.loc.gov/catdir/toc/onix07/2001033013.html DLC