General Interest Article
Proceedings of the Iowa Academy of Science
© Copyright 1940 by the Iowa Academy of Science, Inc.
"Proceedings of the Fifty-Fourth Annual Meeting of the Iowa Academy of Science, Held at Mount Vernon, April 19 and 20, 1940: Minutes of the 1940 Meeting,"
Proceedings of the Iowa Academy of Science: Vol. 47:
, Article 4.
Available at: https://scholarworks.uni.edu/pias/vol47/iss1/4