Housley, Trevor <br/><br/>
Data communications and teleprocessing syatems 
Trevor Housley 
 - 2nd ed. 
 - Englewood Cliffs, N.J.  Prentice-Hall  1987 
 - 474 p. : ill. ; 25 cm. 
<br/><br/><label>ISBN: </label>0131973932 
<br/><br/><label>LCCN: </label>86-016847 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks<br/>Data transmission systems