Published by ARMCO Steel Corp.],, [Middleton, OH:, 1957
Seller: Zephyr Used & Rare Books, Vancouver, WA, U.S.A.
First Edition
4to. 56 pp. Numerous photos, graphs, charts. Spiral-bound colour-printed softcvrs (mnr creasng, shlfwr), still VG. First edition of this technical catalogue listing the steels to be used in building electrical transformers.