Certifications Documents / American Welding Society. Specification for AWS Accreditation of Certified Welding Fabricators.
Chicago-čujuhus (17. p.)Certifications Documents / American Welding Society. Specification for AWS Accreditation of Certified Welding Fabricators.
MLA-čujuhus (9. p.)Certifications Documents / American Welding Society. Specification for AWS Accreditation of Certified Welding Fabricators.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.