General Interest Article
Proceedings of the Iowa Academy of Science
© Copyright 1960 by the Iowa Academy of Science, Inc.
"Proceedings of the Seventy-Second Meeting of the Iowa Academy of Science held at the State University of Iowa, Iowa City, April 22 and 23, 1960: Minutes of the 1960 Meeting,"
Proceedings of the Iowa Academy of Science, 67(1),.
Available at: https://scholarworks.uni.edu/pias/vol67/iss1/4