Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Davidson, A. G., R. Pommerleau, B. W. Dance, R. I. Finnegan, W. L. Sippel, and e. al. 1964. A review of the Dutch elm disease. Canada Department of Forestry, Forest Entomology and Pathology Branch, Bi-monthly Progress Report 20/4. 8 p.