Geyger, William A. Magnetic-amplifier circuits : basic principles, characteristics, and applications / William A. Geyger - 2d ed. - New York : McGraw-Hill Book Company, 1957. - xiii, 394 p. : ill. ; 24 cm. Include Index. Subjects--Topical Terms: Magnetic amplifiers. Dewey Class. No.: 621.381535 / GEM 1957