General Interest Article
Proceedings of the Iowa Academy of Science
© Copyright 1950 by the Iowa Academy of Science, Inc.
"Proceedings of the Sixty-Second Meeting of the Iowa Academy of Science Held at the State University of Iowa, Iowa City, April 21 and 22, 1950: Minutes of the 1950 Meeting,"
Proceedings of the Iowa Academy of Science: Vol. 57:
, Article 4.
Available at: https://scholarworks.uni.edu/pias/vol57/iss1/4