JEFFUS, L. (2012). Welding and metal fabrication. Delmar Cengage Learning.
Lua i Stíl Chicago (17ú heag.)JEFFUS, Larry. Welding and Metal Fabrication. Delmar Cengage Learning, 2012.
Lua MLA (9ú heag.)JEFFUS, Larry. Welding and Metal Fabrication. Delmar Cengage Learning, 2012.
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