Tree-ring measurements of Picea mariana (Black spruce) from sample MACKIPMA-32
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Species PCMA; No of rings 130; Begin 1859; End 1988
物种:PCMA;环数:130;起始年份:1859;终止年份:1988

Species PCMA; No of rings 130; Begin 1859; End 1988
物种:PCMA;环数:130;起始年份:1859;终止年份:1988