00326nam a2200121Ia 4500008004100000041001200041082001900053100002300072245004100095260002500136300001100161650003200172231217s9999    xx            000 0 und d  aEnglish  a621.313  SUB;2  aSubrahmanyam Vedam 0aThyristor control of electric drives  c1988bTMHaNew Delhi  axi+416  aThyristors Drives, electric