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by Jarvis, J. M.
Ottawa : Canada Department of Forestry and Rural Development, 1968

by Perala, Donald A.
St. Paul, Minn. : U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, [1995].

Series: Research paper (North Central Forest Experiment Station) ; NC-321

by Weingartner, D. H.
Maple, Ont. : Ontario Tree Improvement and Forest Biomass Institute, Ministry of Natural Resources, 1985.

Series: Forest research report (Ontario Tree Improvement and Forest Biomass Institute) ; no.111