00434namua2200157 a 4500 00000000000006938 070429s1995 us 000 eng 0-07-069416-8 004 S 91 Summers Ch. K. ISDN Implementor`s Guide: Standards, protocols, and services [Text] New York: Mcgraw-Hill, 1995. 414 p. n/15082 20260805125045.0 13604 13604 0 0 0 0 UWED UWED ANT 2018-01-11 0 004 S 91 000000056269 2026-08-05 12:50:45 2026-08-05 BK