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MATEI (CIOBOTARU), N.; SCARPETE, D. Treatment of Ammonia Wastewater by Ultrasound. Part I: The Influence of the Ultrasound Energy on the Ultrasound Bath Temperature. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science 2015, 38, 27-31.