Tomsho, Greg, Guide to networking essentials / Greg Tomsho. - Seventh edition. - xxii, 665 pages : illustrations ; 23 cm Includes index. ISBN: 1305105435 9781305105430 LCCN: 2015949720 LC Class. No.: TK5105.5 / .T64 2016 Dewey Class. No.: 004.6