Tree-ring measurements of Picea rubens (Red spruce) from sample RIDG-71
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Species PCRU; No of rings 53; Begin 1924; End 1976
物种PCRU(Species PCRU);环数为53;起始年份为1924;终止年份为1976

Species PCRU; No of rings 53; Begin 1924; End 1976
物种PCRU(Species PCRU);环数为53;起始年份为1924;终止年份为1976