1. The etiology of diphtheria Author(s): Nelson, Samuel N., author Publication: Boston : Cupples & Hurd, [1889?] Subject(s): Diphtheria -- etiologyDiphtheria -- microbiology
2. The influence of sewerage and water pollution on the prevalence and severity of diphtheria: read before the Section of Pediatrics, Ninth International Medical Congress, Washington, D.C., September, 1887 Author(s): Earle, Charles Warrington, 1845-1893 author Publication: Philadelphia : J.B. Lippincott Company, [1888?] Subject(s): Diphtheria -- etiologyWater Pollution -- adverse effectsSewage -- adverse effectsMidwestern United States
