Housley, Trevor, <br/><br/>
Data communications & teleprocessing systems / 
Trevor Housley. 
 - 2nd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1987. 
 - xvii, 474 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><br/>eng. 
<br/><br/><label>ISBN: </label>0131973932  TZS 57,330/= 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks.<br/>Data transmission systems.
<br/><br/><label>Dewey Class. No.: </label>384.6 HOU