Tree-ring measurements of Picea mariana (Black spruce) from sample ESKERPMA-42
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Species PCMA; No of rings 107; Begin 1877; End 1983
物种PCMA;年轮数:107;起始年份:1877;终止年份:1983

Species PCMA; No of rings 107; Begin 1877; End 1983
物种PCMA;年轮数:107;起始年份:1877;终止年份:1983