産Chronology

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46050074083090097011101230141015401600170018001900 510–739750–829840–899910–969980–11091160–12291290–14091420–1539

1

1

1

1

1

1

1

1

3

1

1

1

1

1

1

2

2

4

2

4

29 +23

6

9 +3

19 +13

24 +18

47 +41

11 +5

8 +2

6

7 +1

12 +6

7 +1

14 +8

2

3

2

1

5

No year recorded 135

+129

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 ↗