00454nam a22001457a 4500 1933 1933 200207b ||||| |||| 00| 0 eng d 671 B9851 1529 Butler, H. E. J. Electric resistance welding: a practical guide to spot, steam, and projection and butt welding methods London George Newnes Ltd. 1950 170p. 12.01 Electric Welding BK 0 0 ddc 0 671_000000000000000_B9851 0 4988 CL CL 1953-03-13 A. H. Wheeler 671 B9851 01637 2020-02-07 BK 0 0 ddc 0 671_000000000000000_B9851 0 4989 CL CL 1953-03-13 A. H. Wheeler 671 B9851 01638 2020-02-07 BK