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Van Chi Dao, Tien Dung Le, Xuan Ha Tran. Determination of actual characteristic curve of main ventilation fan at Quang Ninh underground coal mines using field measurement method. Vietnam J. Earth Sci. [Internet]. 2021 Nov. 30 [cited 2024 Apr. 23];44(2):165-80. Available from: https://vjs.ac.vn/index.php/jse/article/view/16761