General Interest Article
Proceedings of the Iowa Academy of Science
©1957 Iowa Academy of Science, Inc.
"Proceedings of the Sixty-Ninth Meeting of the Iowa Academy of Science held at Iowa State Teachers College, Cedar Falls, Iowa, April 26 and 27, 1957: Minutes of the 1957 Meeting,"
Proceedings of the Iowa Academy of Science, 64(1), 35-38.
Available at: https://scholarworks.uni.edu/pias/vol64/iss1/4