Tree-ring measurements of Picea mariana (Black spruce) from sample NONAMPLA-371
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Species PCMA; No of rings 125; Begin 1864; End 1988
物种PCMA;环数125;起始年份1864;终止年份1988

Species PCMA; No of rings 125; Begin 1864; End 1988
物种PCMA;环数125;起始年份1864;终止年份1988