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2. Al Taweel, A. M., R. Divakarla, L. Walker and S. Walker, “A Light Attenuation Technique for Investigating Suspensions of High Optical Densities”, to be published in Powder Technology.
3. Physical Rate Processes in Industrial Fermentation Part I: The Interfacial Area in Gas/Liquid Contacting with Mechanical Agitation;Calderbank;Trans. Inst. Chem. Eng.,1958
4. Physical Rate Processes in Industrial Fermentation Part II: Mass Transfer Coefficients in Gas/Liquid Contacting with and without Mechanical Agitation;Calderbank;Trans. Inst. Chem. Eng.,1959