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The authors regret that, during preparation of the above paper, 17 paragraphs found originally in refs 4-6 and 10 were included in our text without special quotations that would make it clear that the wording used was taken without significant change from those references. We wish to acknowledge the wording of these previous authors.

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Eight different known-age samples of light, nondyed linen textile dated between 1200 B.C. and AD.

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