Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Gray, B., R. F. Billings, R. I. Gara, and R. L. Johnsey. 1972. On the emergence and initial flight behavior of the mountain pine beetle Dendroctonus ponderosae in eastern Washington . Zeitschrift fur Angewandte Entomologie 71:250-259.