00331nam a2200145Ia 4500008004100000041000800041082001700049100001700066245004200083250001200125260001500137300000800152365000800160700001700168230718s9999    xx            000 0 und d  aeng  a621.313bCLA  aClayton A.E.  aPerformance And Design Of DC Machines  a3rd ed.  c1962bELBS  a516  cRs.  aClayton A.E.