000			00432nam a2200145Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
020			_a0-07-121028-8
082			_a621.382 CAR
100			_aCarlson, Bruce, A Crilly, Paul, B _91837
245		0	_aCommunication systems: an introduction to signals and noise
250			_a4th
260			_aTata Mcgraw hill _bBoston _c2004
300			_b385
650			_aCOMMUNICATION SYSTEM
999			_c172838 _d172838