Puzman, Josef, <br/><br/>
Public data networks :  from separate PDNs to ISDN / 
Josef Puzman and Boris Kubin. 
 - London :  Springer-Verlag,  1992. 
 - 241 pages :  illustrations ;  24 cm. 
<br/><br/><label>ISBN: </label>3540195807 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks.<br/>Computer network architectures.<br/>Integrated services digital networks.