Industrial electronics and control

by Kloeffler, Royce Gerald n. 1890, Kloeffler, Royce Gerald n. 1890
Published 1963

Direct-current machinery /

by Kerchner, Russell Marion n. 1899, Kerchner, Russell Marion n. 1899, Brenneman, Jesse Lamar n. 1886, Kloeffler, Royce Gerald n. 1890
Published 1948