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2. Welding W, Ta, Mo and related metals;Spraragen;Welding Res. Suppl.,1941
3. The welding of high melting point metals;West;Sheet Metal Ind.,1948
4. Fabrication of refractory metals;Bruckhart;Metal. Ind.,1959
5. Fabrication of refractory metals;Bruckhart;Metal. Ind.,1959