Affiliations Courses Research 1939Graduate Assistant In BotanyUniversity Of Michigan1939Graduate Assistant In Department Of BotanyUniversity Of Michigan1940Graduate Assistant In Department Of BotanyUniversity Of Michigan1941[position unknown]University Of Michigan1941[position unknown]Department Of Botany University Of Michigan 1941Botany 1941Instructor 1939[subject unknown]Beginners1939[subject unknown]Beginners1940[subject unknown]Beginners1941[subject unknown]Beginners
