Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Magasi, L., K. Harrison, D. Urquhart, and D. Murray. 1993. Three decades of Dutch elm disease in Fredericton, N.B.: 1961-1990. Natural Resources Canada, Canadian Forestry Service, Maritimes Region (Fredericton, N.B.), Information Report M-X-185E.