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Yisa Tufion Albert, W.; David T. , G.; A. , A.; Kuhe, A. . PERFORMANCE EVALUATION OF BLACK SOAP (TOILET SOAP) BLENDED WITH DE-OILED JATROPHA CAKE ADDITIVE AS SOLID LUBRICANT IN DIRECT COLD EXTRUSION OF ALUMINIUM ALLOYS. Int. J. Eng. Sci. Tech 2022, 6, 66-83.