2023-06-14问：written on the parchment was scratched out
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2023-06-14问：number of surviving European
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2023-06-14问：multiplies see also article
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2023-06-14问：Since the era of Charlemagne
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2023-06-14问：so expensive material
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2023-06-14问：ancient and medieval Latin,
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2023-06-14问：then only a few have reached us
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