The User's Directory of Computer Networks / 
edited by Tracy L. LaQuey 
 - Texas :  Digital Press ,  © 1990. 
 - xv,  630 pages :  28 cm. 
<br/><br/>Includes Bibliographical references. 
<br/><br/><label>ISBN: </label>0139507590   9780139507595 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Directories