000			00372nam a2200121Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
082			_a621.382 DAS
100			_aDas, J. Mullick, S.K and Chatterjee, P.K _91915
245		0	_aPrinciples of digital communications
260			_aNew age international _bNew Delhi _c2000
300			_b220
650			_aCOMMUNICATION SYSTEM
999			_c168278 _d168278