000			00381nam a2200157Ia 4500
041			_aeng
082			_a384.6 _bCHO
100			_aChowdary, T H
245		0	_aAre You Listening?
260			_aMumbai _bBharatiya Vidya Bhavan _c1990
300			_aviii, 237 p.
650			_aTelecommunications
650			_aTechnology
942			_cBK
008			190315s9999||||xx |||||||||||||| ||und||
999			_c2359 _d2359