Rural school sanitation : including physical and mental status of school children in Porter County, Indiana / by Taliaferro Clark, Surgeon, United States Public Health Service, George L. Collins, Surgeon, United States Public Health Service, and W.L. Treadway, Assistant Surgeon, United States Public Health Service ; prepared by direction of the Surgeon General.
Clark, Taliaferro, 1867-1948. | Date: 1916