Draper, A. Electrical machines / by A. Draper. - 2nd ed. - London : Longmans, 1967. - xx, 384 p. : ill. ; 26 cm. - Electrical engineering series . - Electrical engineering series . Includes index Subjects--Topical Terms: Electric machinery.Electric motors. Dewey Class. No.: 621.31042 / DRE 1967