Data communications & computer networks : a business user's approach 
West, Jill. 
 - 9th edition. 
 -  Cengage Learning, Inc.  2023 
 - xviii, 488 pages 
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<br/><br/><label>ISBN: </label>978-0-357-50440-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks.
<br/><br/><label>Dewey Class. No.: </label>004.6 W5161 2023