might expected canadian spruce forests haddock ref name haddock haddock pg silvicultural views canadian spruce forests chron ref noted wright 's ref name wri wright tg canadian spruce forest chron ref quotation spruce yields british isles cubic feet per acre sup sup ha per year germany cubic feet per acre sup sup ha per year misleading least meant imply yields might approached boreal forest region canada haddock thought wright 's suggestion
Applied science Environmental studies and forestry Silviculture