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Lua i Stíl Chicago (17ú heag.)Singh, Ramesh. Applied Welding Engineering: Processes, Codes, and Standards. Second edition. Amsterdam: Butterworth-Heinemann/Elsevier, 2016.
Lua MLA (9ú heag.)Singh, Ramesh. Applied Welding Engineering: Processes, Codes, and Standards. Second edition. Butterworth-Heinemann/Elsevier, 2016.
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