Kerchner, Russell M. Alternating-current circuits / Russell M. Kerchner; George F. Corcoran - 3d ed. - New York : John Wiley & Sons, 1951 [Printing 1956]. - ix, 598 p. : ill. ; 24 cm. Include Index. Subjects--Topical Terms: Electric currents, Alternating. Dewey Class. No.: 621.3 / KEA 1956