621.3
   Fit
    B
          Pitagerald , Arthar Eugeme , 1909 - Basic electrical engineering ; circuits , machines , electronics , control [by] A . E . Pitagerald [and] David E . Higginbotham . 2d . ed . New York , McGraw-Hill [c1957] 540 p . ilus . tabl . 21 cm . ( McGraw-Hill electrical and electronic engineering series )