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Forest Insect and Disease Notes, December 1990. Contents: something new; Atropellis canker; taxonomic research on forest insects and diseases at the Northern Forestry Centre: part 1, Introduction to Taxonomy; synopsis of major pests in the region, 1990. 1990. Canadian Forestry Service, Northern Forest Research Centre, Edmonton, Alberta. Forest Insect and Disease Note A-016. 6 p.