Harper, William L.,   1929- <br/><br/>
Data communications desk book ; a systems analysis approach /  [Book]. 
William L. Harper and Robert C. Pollard.  
 - Englewood Cliffs, N.J. :   Prentice-Hall,   1982. 
 - 350 p. :   ill. ;   29 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0131963783 
<br/><br/><label>LCCN: </label>81017794 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.