1. The significance of pathogenic spirilla in American surface waters, with a description of one isolated from the Schuylkill River at Philadelphia Author(s): Abbott, A. C. (Alexander Crever), 1860-1935 author Publication: [New York?] : D. Appleton and Company, [1896] Subject(s): Spirillaceae -- isolation & purificationWater MicrobiologyRiversPhiladelphia