000			00374nam a2200145Ia 4500
008			230106s9999 xx 000 0 und d
082			_a621.3 _bJO-I
100			_aJolley,E.H
245		0	_aIntroduction to telephony and telegraphy
250			_a1st Ed.
260			_aNew Delhi _bWheeler & Corporative _c1994
300			_a413
650			_aElectronics Engineering
942			_cBK
999			_c331 _d331