Tree-ring width of Picea abies from historical object sample 6495B/05A, Nethe...

Species: Picea abies; No of rings: 38; Age not determined; Pith: not applicable; Heartwood: absent; Sapwood: absent; Number of sapwood rings: 0; Last ring under bark: absent物种：欧洲云杉（Picea abies）；年轮数：38；树龄未测定；髓心：不适用；心材：缺失；边材：缺失；边材年轮数：0；树皮内末次年轮：缺失