00307nam a2200121Ia 4500008004100000041000800041082002500049100001800074245003100092250001000123260004400133300000800177211209s2000    xx            000 0 und d  aeng  a621.382 O 00 ROD/COO  aRODDY, DENNIS  aELECTRONIC COMMUNICATIONS   a4 ed.  aNEW DELHIbPRENTICE-HALL OF INDIAc2000  a620