Oscar Edward Harder

Alloys of Chromium  Oscar Edward Harder David Ford McFarland Paperback. Legare Street Press, 2023-07-18 ISBN 9781021812353     Alloys of Chromium  Oscar Edward Harder David Ford McFarland Hardback. Legare Street Press, 2023-07-18 ISBN 9781019770153     Alloys of Chromium, Copper and Nickel (Classic Reprint)  Oscar Edward Harder Paperback. Forgotten Books, 2015-09-27 ISBN 9781330212301