HELDMAN,R.K <br/><br/>
INFORMATION TELECOMMUNICATIONS NETWORKS PRODUCTS,AND SERIES 

 - NEW YORK  McGraw-Hill  1994 
 - 24X16 
<br/><br/><label>ISBN: </label>0070280401 
<br/><br/><label>Dewey Class. No.: </label>621.38195404 H474