Clayton, Albert E. 
Performance and design of direct current machines by Albert E. Clayton and N. N. Hancock - 3d ed. - London Pitman publishing 1959 - 516 p. illus. 23 cm.
Electric machinery
623.132 / CLA/1959
                        Performance and design of direct current machines by Albert E. Clayton and N. N. Hancock - 3d ed. - London Pitman publishing 1959 - 516 p. illus. 23 cm.
Electric machinery
623.132 / CLA/1959