TY - BOOK ED - Indian Standards Institution TI - Indian standard approval tests for welders working to approved welding procedures: pt. 1, fusion welding of steel PY - 1974/// CY - New Delhi PB - Indian Standards Institution KW -  Standards  KW -  Steel Welding KW - NASA Thesaurus  N1 - IS 7310 : Part 1 : 1974 ER -