00249nam a2200109Ia 4500008004100000041000800041082002000049100001700069245003600086260000900122300000800131211209s1975    xx            000 0 und d  aeng  a621.381 N75 JOH  aJOHN ALLISON  aELECTRONIC INTEGRATED CIRCUITS   c1975  a139