Tree-ring measurements of Picea mariana (Black spruce) from sample MACKIPMA-12
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Species PCMA; No of rings 122; Begin 1867; End 1988
物种PCMA;年轮数:122;起始年份:1867;终止年份:1988

Species PCMA; No of rings 122; Begin 1867; End 1988
物种PCMA;年轮数:122;起始年份:1867;终止年份:1988