000 00324nam a2200133Ia 4500
100 _aRonayne, John
020 _a81-85614-66-0
250 _a2nd ed
942 _cBK
245 _aIntroduction to digital communications switching
260 _aA H Wheeler, Allahabad
_c1997
082 _a621.381537 Ron
300 _a238p ill.
999 _c31521
_d31521