Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Dyer, E. D. A., P. M. Hall, and L. Safranyik. 1975. Numbers of Dendroctonus ruflpennis (Kirby) and Thanasimus undatulus Say at pheromone-baited poisoned and unpoisoned trees . Entomological Society of British Columbia, Journal 72:20-22.