Beyda, William J. <br/><br/>
Basic data communications :  a comprehensive overview / 
William J. Beyda 
 - Englewood Cliffs, N. J. :  Prentice-Hall,  1989 
 - 268 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0130582646 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems