Tree-ring measurements of Picea glauca (White spruce) from sample CHURCPGL-101
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Species PCGL; No of rings 191; Begin 1739; End 1929
物种PCGL;年轮数191;起始年份1739;终止年份1929

Species PCGL; No of rings 191; Begin 1739; End 1929
物种PCGL;年轮数191;起始年份1739;终止年份1929