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1239 1982, . (1983). SPECIFICATION FOR MILD STEEL TUBES TABULAR AND OTHER WROUGHT STEEL FITTINGS PART II. DELHI: ISI.
1239 1982, . 1983. SPECIFICATION FOR MILD STEEL TUBES TABULAR AND OTHER WROUGHT STEEL FITTINGS PART II. DELHI: ISI.
1239 1982, . SPECIFICATION FOR MILD STEEL TUBES TABULAR AND OTHER WROUGHT STEEL FITTINGS PART II. DELHI: ISI. 1983.