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4005-1967, . (1967). SPECIFICATION FOR TUNGSTEN CARBIDE FOR MINING TOOLS. DELHI: ISI.
4005-1967, . 1967. SPECIFICATION FOR TUNGSTEN CARBIDE FOR MINING TOOLS. DELHI: ISI.
4005-1967, . SPECIFICATION FOR TUNGSTEN CARBIDE FOR MINING TOOLS. DELHI: ISI. 1967.