Affiliations Courses Research 1937Assistant In ZoologyColumbia University1938Assistant In ZoologyColumbia University1939Assistant In ZoologyColumbia University1940Assistant In ZoologyColumbia University1945Assistant ProfessorColumbia University1946Assistant Professor Of ZoologyColumbia University 1937Zoology 1937Student 1938[subject unknown]Beginners1939[subject unknown]Beginners1940[subject unknown]Beginners1945[subject unknown]Library Readers1946[subject unknown]Independent
