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Bibliography of black spruce literature published by the Canadian Forest Service-Ontario, Great Lakes Forestry Centre 1965-1995
V. F. Haavisto · Great Lakes Forestry Centre
34 sayfa · 1995
Bibliographie / Épinette noire / Bibliography / Black spruce
Sphagnum mosses of Ontario
V. F. Haavisto · Canadian Forestry Service, Dept. of the Environment
36 sayfa · 1974
Mosses / Peat mosses
Space to grow
V. F. Haavisto, C. R. Smith, C. Mason · Forestry Canada, Ontario Region
206 sayfa · 1991
Congresses / Plantes / Éclaircie (Sylviculture) / Plant spacing / Forest thinning