00762nam 2200241zu 450 991100685490332120250328005704.097815231638611523163860(CKB)38098563800041(EXLCZ)993809856380004120250328|2025uuuu || |engur|||||||||||Specification for AWS Certification of Welders and Accreditation of Test FacilitiesAmerican Welding Society (AWS)20259781643223520 1643223526 American Welding Society1821781BOOK9911006854903321Specification for AWS Certification of Welders and Accreditation of Test Facilities4387664UNINA