XII B4
2	The Iron and Steel Institute.Symposium on the Welding of Iron and Steel London     Supplementary advance copy (subject to correction) of the Papers of group 4 of the Symposium on the Welding of Iron and Steel, may 2-3 1935 [Текст] / The Iron and Steel Institute.Symposium on the Welding of Iron and Steel London. — London, 1935. — 36 p.: ill., 6 pl.