龍Chronology

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5005806007008009701100120014101590160017701800 510–579750–799840–969980–10991290–14091420–15891670–1769

1

1

7 +1

2

7 +1

1

1

1

1

3

1

1

3

6

3

10 +4

1

2

1

1

1

3

1

1

1

4

1

No year recorded 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 ↗