Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Mogren, E. W. 1955a. A study of some aspects of susceptibility of ponderosa pine to attack by Black Hills beetle. Unpublished dissertation, University of Michigan, Ann Arbor. 111 p.
This page uses cascading style sheets (CSS). It should display correctly using current versions of all major browsers.