Ключевые слова: abstract, age, annual, beech, beige, boarding, circular, core, crack, deep, endangered, fiber, fire, fuel, graphic, growth, hardwood, heart, industry, lumber, material, oak, plank, rare, resource, rich, ring, ripple, rough, round, section, separation, shadow, smooth, split, stick, stock, storage, striped, structure, stuff, surface, textured, timber, trunk, valuable, waves, wood grain, woodwork, year,