Ключевые слова: abstract, annual, background, brown, cambium, circle, close, closeup, concentric, crack, cross, cut, detail, distinct, dry, extreme, growth, heartwood, layer, log, lumber, macro, medullary, micro, pattern, pith, ray, ring, round, sapwood, sawed, sawn, section, surface, texture, timber, transverse, tree, trunk, wood,