The Lincoln Electric Company. (1973). The procedure handbook of arc welding (12th ed.). Export Representatives.
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Dyfyniad Arddull Chicago
The Lincoln Electric Company. The Procedure Handbook of Arc Welding. 12th ed. Ohio: Export Representatives, 1973.
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Dyfyniad MLA
The Lincoln Electric Company. The Procedure Handbook of Arc Welding. 12th ed. Export Representatives, 1973.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.