Tree-ring width of Picea abies from historical object sample 6019B/03A, Nethe...
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Species: Picea abies; No of rings: 62; Age not determined; Pith: not applicable; Heartwood: complete; Sapwood: complete; Number of sapwood rings: 29; Last ring under bark: present
样本物种：欧洲云杉（Picea abies）；总年轮数：62；树龄未测定；髓心：不适用；心材：完整；边材：完整；边材年轮数：29；树皮下方存在末次年轮
