XML-file of tree-ring width from historical object 6647B@en
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资源简介：
Species: Quercus species; No of rings: 54; first year: 1698; tree-death year: 1752; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 1; Last ring under bark: absent
创建时间：
2026-04-23
