Royce G. Kloeffler, Russell M. Kerchner & Jesse L. Brenneman.
Direct-current machinery.
R614829. Direct-current machinery. By Royce G. Kloeffler, Russell M. Kerchner & Jesse L. Brenneman. NM: additions & revisions. © 17Aug48; A24541. Russell M. Kerchner (A); 29Sep75; R614829.
Russell M. Kerchner|A