Tree-ring chronology of Picea glauca (White spruce) compiled from tree samples WILLOW
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Species PCGL; No of trees 14; No samples 28; No of years 215; Begin 1769; End 1983; Creation date 1997-01-01
创建时间：
2007-01-01
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Species PCGL; No of trees 14; No samples 28; No of years 215; Begin 1769; End 1983; Creation date 1997-01-01