Beyda, William J. <br/><br/>
Basic data communications a comprehensive overview 

 - Prentice Hall, Englewood cliffs,New Jersey  1989 
 - xiv,268 
<br/><br/><label>ISBN: </label>0-13-058421-5 
<br/><br/><label>Dewey Class. No.: </label>001.64404 Bey