General Interest Article
Proceedings of the Iowa Academy of Science
© Copyright 1939 by the Iowa Academy of Science, Inc.
"Proceedings of the Fifty-Third Annual Meeting of the Iowa Academy of Science, Held at Ames, April 21 and 22, 1939: Minutes of the 1939 Meeting,"
Proceedings of the Iowa Academy of Science: Vol. 46:
, Article 4.
Available at: https://scholarworks.uni.edu/pias/vol46/iss1/4