Tree-ring measurements of Picea mariana (Black spruce) from sample ESKERPMA-92
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Species PCMA; No of rings 105; Begin 1884; End 1988
物种PCMA;年轮数为105;起始年份为1884;终止年份为1988

Species PCMA; No of rings 105; Begin 1884; End 1988
物种PCMA;年轮数为105;起始年份为1884;终止年份为1988