膝Chronology

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6107108309601110122014101590160017001800 620–709720–829860–959980–11091130–12191290–14091420–1589

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1

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1

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1

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2

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4

7 +1

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1

1

No year recorded 50

+44

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗