00269nam a2200109Ia 4500100002700000654001800027245004000045260003300085082002100118300000800139546001200147  aDas /J/ Mullick/ S.K.   aCommunication  aPrinciples of digital communication  bNew  Age  Int (P)  Ltdc1986  a621.382bdas/mul  a645  aENGLISH