00302nam a2200109Ia 4500008004100000041000800041082002200049100001800071245005600089260003900145300000800184211209s1973    xx            000 0 und d  aeng  a621.388 5 N73 RAM  aRAMABHADRAN S  aTELECOMMUNICATIONS PRINCIPLES CIRCUITS AND SYSTEMS   aNEW DELHIbKHANNA PUBLISHERSc1973  a869