1883 - 1973, Amerikan. Bakteriologe; Ph.D.; Professor of Bacteriology in the Iowa State College of Agriculture and Mechanic Arts; Bacteriologist of the Iowa Agricultural Experiment Station (1916)
1883 - 1973, Amerikan. Bakteriologe; Ph.D.; Professor of Bacteriology in the Iowa State College of Agriculture and Mechanic Arts; Bacteriologist of the Iowa Agricultural Experiment Station (1916)