General Interest Article
Proceedings of the Iowa Academy of Science
©1947 Iowa Academy of Science, Inc.
"Proceedings of the Fifty-Ninth Meeting of the Iowa Academy of Science, Held at Iowa State Teachers College, Cedar Falls, Iowa, on April 18 and 19, 1947: Minutes of the 1948 Meeting,"
Proceedings of the Iowa Academy of Science, 54(1), 19-20.
Available at: https://scholarworks.uni.edu/pias/vol54/iss1/4