Ключевые слова: abstract, autumn, background, bark, brown, circle, circular, concentric, construction, cross, cut, dia, diameter, energy, fire, firewood, forest, frame, home, industry, life, log, logs, lumber, material, measure, nature, old, outdoors, pattern, pile, piled, pine, resources, rings, rough, round, rule, ruler, rural, saw, section, stack, texture, timber, tree, trunk, winter, wood, wooden,