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Rasaili P, Bhattarai A. Feasibility study of Replacing Currently used Freons with Ammonium Chloride and Barium Hydroxide for Freezing System. Himalayan J. Sci. Technol. [Internet]. 2023 Dec. 31 [cited 2024 Nov. 21];7(1):74-9. Available from: https://nepjol.info./index.php/hijost/article/view/61132