Held, Gil (Gilbert) <br/><br/>
Data communication  a comprehensive approach 
Gil Held, Ray Sarch.. 
 - New York  McGraw Hill  [n.d.] 
 - xix, 587p.: ill.; 26 cm. 
<br/><br/> McGraw-Hill series on computer communucation. 
<br/><br/><label>ISBN: </label>70289495 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems Computer networks. 
<br/><br/><label>Dewey Class. No.: </label>005.71  / H52D