Title |
Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylene welding and cutting process, by L. Broemel, with a special course in elementary and advanced sheet metal work and pattern drafting for technical and trade school instructors and students; also for reference and study by sheet metal workers and apprentices, by J. S. Daugherty. |
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