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Keadthongthawee* Ph.D. (Environmental Science) , S.; Hungmitr* M.P.H, C.; Chaiyanuwatiwong* M.P.H. (Master of Public Health, S.; Panta M.Sc. (Applied Statistics, C. The study check quantity of Oxygen compared with depth in Confined space (ground water well) in Region Health 3th. JDPC3 2019, 13, 17-24.