000			00356nam a2200133Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
020			_a0-07-118183-0
082			_a621.382 PRO
100			_aProakis, G. John _93115
245		0	_aDigital communication
260			_aTata Mcgraw hill _bBoston _c2001
300			_b500
650			_aCOMMUNICATION SYSTEM
999			_c170848 _d170848