TY - BOOK AU - CARLSON A.B.,CRILLY P.B. AND RUTLEDGE TI - COMMUNICATION SYSTEMS 4TH ED AN INTRO. TO SIGNAL AND NOISE IN ELECTRICAL COMM U1 - 621.38223 PB - MC GRAW HILL PUB.CO. DELHI KW - DIGITAL COMMUNICATION (T.E.) N1 - 6963 ER -