Electrical machines,
Draper, Alec.
Electrical machines, by A. Draper. - 2nd ed. - London : Longmans, 1967. - xx, 384 p. : tables, diagrs. - Electrical engineering series .
Electric machinery.
Electric motors.
Electrical machines, by A. Draper. - 2nd ed. - London : Longmans, 1967. - xx, 384 p. : tables, diagrs. - Electrical engineering series .
Electric machinery.
Electric motors.