000			00327nam a2200133Ia 4500
005			20260413100924.0
008			230516s9999||||xx |||||||||||||| ||und||
100			_aProakis, John G
245		0	_aDigital Communications
260			_bBoston Mcgraw Hill _c2001
300			_a1002
942			_cGB
999			_c5534 _d5534