SHAY, William A. <br/><br/>
Understanding Data Communications and Networks 

 - 2nd ed. 
 - Boston  Brooks/cole publishing co.  1999 
 - xxii, 711p. 
<br/><br/><label>ISBN: </label>981-240-050-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data<br/>Communication<br/>Network
<br/><br/><label>Dewey Class. No.: </label>4.6