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11101640179018001900 1160–16391700–17891850–1899

1

1

4

2

4

3

2

4

1

2

1

No year recorded 17

+11

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 ↗