เครื่องบดหินและโรงงานเหมืองหินในนามิเบีย. Pulmonary Function and Health Risk of Dust Exposure among .49 3 2019 339 THJPH 2019; 49(3): Received: August 16, 2018; Revised: October 16, 2018; Accepted: November 18, 2019 Correspondence: Uraiwan Madardam, Occupational Health and Safety Program, School of Public Health ...