Canadian Forest Service Publications
A survey to evaluate crown condition of forest, roadside, and urban maple trees in Ontario, 1987-1995. 1998. Hopkin, A.A.; Howse, G.M. Northern Journal of Applied Forestry 15: 141-145.
Available from: Great Lakes Forestry Centre
Catalog ID: 9740
CFS Availability: PDF (request by e-mail)
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