Description

National Navy
Electric arc welding course, 1952, 24 pp.
Oxy-acetylenic progression, 1962, 19 pp.
Progression of electric arc exercises, 1962, 17 pp.
Paperback, in 4°

National Navy Electric arc welding course, 1952, 24 pp. Oxy-acetylenic progression, 1962, 19 pp. Progression of electric arc exercises, 1962, 17 pp. Paperback, in 4°