Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Nagel, R. H., F. B. Knight, and D. McComb. 1956a. The trap-tree method for controlling Engelmann spruce beetles . Colorado-Wyoming Academy of Science 4:48-49.
This page uses cascading style sheets (CSS). It should display correctly using current versions of all major browsers.