Document Type
Article
Journal/Book Title/Conference
The American Naturalist
Volume
133
Issue
4
Publisher
University of Chicago
Publication Date
4-1-1989
First Page
604
Last Page
612
Recommended Citation
Grant, Verne, "The Theory of Speciational Trends" (1989). Gr. Paper 22.
https://digitalcommons.usu.edu/bee_lab_gr/22
