Affiliations Courses Research 1919[position unknown]College Of City Of New York1920Graduate StudentColumbia University1921Assistant In ZoologyColumbia University1922Assistant In ZoologyColumbia University1928Associate Professor Of ZoologyUniversity Of Idaho 1919Protozoology 1919Student 1920Zoology[role unknown]1921Zoology[role unknown]1922Zoology[role unknown]1928[subject unknown][role unknown]
