Levi, Enrico. Electromechanical power conversion : low-frequency, low-velocity conversion processes / Enrico Levi and Marvin Panzer. - 2nd ed. - London : McGraw-Hill, c 1966. - xxvii, 499 p. : ill. ; 23 cm. Includes index. 310 310 Subjects--Topical Terms: Electromechanical devices. Dewey Class. No.: 621.3 / L578e