Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Sartwell, C. 1970. Ips pini attack density in ponderosa pine slash as related to felling date in eastern Washington. United States Department of Agriculture, Forest Service, Research Note PNW-131, Portland, Oregon. 8 p.
This page uses cascading style sheets (CSS). It should display correctly using current versions of all major browsers.