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sapwood137Cs . A group of trees with a high heartwood: sapwood137Cs concentration ratio showed significantly https://t.co/lPdUwQELrT https://t.co/Ptdg9rDqBk
sapwood137Cs . A group of trees with a high heartwood: sapwood137Cs concentration ratio showed significantly https://t.co/lPdUwQELrT https://t.co/Ptdg9rDqBk