"Respiratory function in Southern Appalachian coal miners. "; "Rasmussen, Donald L.", "Nelson, C. W."; "Respiratory organs--Research.", "Coal miners--Diseases--Appalachian Region--Research.", "Lungs--Dust diseases--Research.", "Pneumoconiosis--Appalachian Region--Research."; "Rasmussen, Donald L.", "Nelson, C. W."; "1971"; "Journal article reprint from: American Review of Respiratory Disease, v.103 (1971). "; ""; "P16580"; "pec"; "Respiratory organs--Research.", "Pneumoconiosis--Appalachian Region--Research.", "Lungs--Dust diseases--Research.", "Coal miners--Diseases--Appalachian Region--Research."; "14256"; .