Abdulbari, H. A. (2009). Research higlights formulation of high performance, multipurpose grease using gypsum from titanium dioxide manufacturing waste. Penerbit UMP.
சிகாகோ பாணியிலான மேறà¯à®•ோளà¯à®•ளà¯Abdulbari, Hayder A. Research Higlights Formulation of High Performance, Multipurpose Grease Using Gypsum From Titanium Dioxide Manufacturing Waste. Penerbit UMP, 2009.
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