Ключевые слова: bark, birch, carrying, construction, cut, damage, deforestation, destruction, ecology, energy, environmental, firewood, forestry, fuel, harvest, heap, heavy, import, industrial, industry, lift, lifting, load, log, logging, lumberjack, machine, machinery, manufacturing, many, material, nature, no people, operator, outdoors, pile, pine, production, raw, resource, rough, round, stack, stacked, stock, storage, timber, trunk, wood, work,