Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Leach, J. G., L. W. Orr, and C. Christensen. 1937. Further studies on the interrelationship of insects and fungi in the deterioration of felled Norway pine logs [Scolytidae, p 129, 130, 139] . Journal of Agricultural Research 55:129-140.