蟬Chronology

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610114015901600175018001870 620–11391150–15891630–17491820–1869

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1

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2

No year recorded 11

+5

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 ↗