ANGELL,D. <br/><br/>
ISDN FOR DUMMIES 
DAVID ANGELL 
 - CHICAGO  IDG BOOKS  1995 
 - xxvii,332p.;ill.:  pbk 
<br/><br/><label>ISBN: </label>1568843313 
<br/><br/><label>LC Class. No.: </label>TK5103.7.A5 1995