00453nam 2277219 450000100060000000300230000600500090002900800410003808200110007907200270009002000180011710000190013526000170015425000060017124500150017765000270019265000250021965000170024477219StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a004.66 aisdn computer hardware a81-203-1304-6 aselling series bP.H.I c1996 a2 ausing isdn aisdn computer hardware atheory @ terminology awhat is isdn