000			00385nam a2200145Ia 4500
008			230106s9999 xx 000 0 und d
082			_a621.381 _bRO-I
100			_aRonayne,John
245		0	_aIntroduction to digital communication switching
250			_a2nd Ed.
260			_aNew Delhi _bWheeler & Corporative _c1992
300			_a238
650			_aElectronics Engineering
942			_cBK
999			_c329 _d329