00341nam a2200133Ia 4500008004100000041000800041082001600049100001500065245004700080260002800127300000800155365001600163700002800179230718s9999    xx            000 0 und d  aeng  a621.38bSIN  aSingh R.P.  aCommunication Systems bAnalog And Digital  c1995bTata McGraw-Hill   a592  cRs.b120.00  aSingh R.P. & Sapre S.D.