Ключевые слова: abstract, art, background, bark, birch, circle, concentric, cross section, cut, energy, fence, firewood, forest, fuel, group, hardwood, heap, heating, idea, in a row, log, logging, many, material, order, pattern, pile, pine, raw, rough, round, row, shape, snow, stack, stacked, storage, texture, timber, tree, tree trunk, trunk, wall, wallpaper, winter, wood, wood background, wood grain, wooden,