TY - BOOK ED - National Center for Construction Education and Research (U.S.) TI - Welding : level one : [trainee guide] T2 - Contren learning series SN - 9780136106517 U1 - 671.52 23 PY - 2010/// CY - Columbus, Ohio : PB - Prentice Hall KW - Welding N1 - Includes bibliographical references and index ER -