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Start Over You searched for: Authors Bock, Carl Ernst, 1809-1874, author Remove constraint Authors: Bock, Carl Ernst, 1809-1874, author Authors Wyss, Oskar, 1840-1918, author Remove constraint Authors: Wyss, Oskar, 1840-1918, author Formats Text Remove constraint Formats: Text Subjects Typhus, Epidemic Louse-Borne -- epidemiology Remove constraint Subjects: Typhus, Epidemic Louse-Borne -- epidemiology Dates by Range 1850-1899 Remove constraint Dates by Range: 1850-1899
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