00254nam a2200109Ia 4500008004100000020001500041041000800056100001800064245002700082260002700109300000800136211209s1988    xx            000 0 und d  a8126508242  aeng  aHAYKIN, SIMON  aDIGITAL COMMUNICATION   aNEW DELHIbWILEYc1988  a597