Tree-ring measurements of Picea mariana (Black spruce) from sample MACKIPMA-92
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Species PCMA; No of rings 123; Begin 1866; End 1988
物种 (Species):PCMA;环数:123;起始年份:1866;结束年份:1988

Species PCMA; No of rings 123; Begin 1866; End 1988
物种 (Species):PCMA;环数:123;起始年份:1866;结束年份:1988