喩Chronology

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51061067070080090096010001080110012201540166018301940 520–609620–669720–799840–899910–9591010–10791160–12191230–15391550–16591670–18291840–1939

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No year recorded 8

+2

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 ↗