Nijholt, W. W., and L. H. McMullen. 1980. Pine oil prevents mountain pine beetle attack on living lodgepole pine trees . Canada Department of the Environment, Canadian Forestry Service, Bimonthly Research Notes 36:1-2.
Nijholt & McMullen 1980
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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