00249nam a2200109Ia 4500008004100000041000800041082002300049100001600072245001600088260002700104300000800131211209s1979    xx            000 0 und d  aeng  a621.381 52 N78 GRA  aGRAFHAM D R  aSCR MANUAL   bGENERAL ELECTRICc1979  a752