000			00381nam a2200157Ia 4500
008			180611s9999||||xx |||||||||||||| ||und||
020			_a0 356 03772 X
041			_aen
082			_a621.382
100			_aFRASER, W.
245		0	_aTelecommunications
250			_a2nd ed
260			_aLondon _bThe English Language Book Soc _ciety & Macd1970
300			_axii, 803p.
942			_cLL
999			_c8232 _d8232