Ключевые слова: age determination, annual growth, arboriculture, biology, botany, closeup, closeup photography, concentric circles, crosssection, dendrochronology, dendrochronology study, dendroecology, dendrology, detailed, environmental science, forestry, forestry science, growth rings, lumber, macro photography, natural history, nature, rings, timber, tree age, tree anatomy, tree bark, tree biology, tree core, tree growth, tree rings, tree species, tree trunk, wood, wood grain, wood texture, woody plant,