貝Chronology

‹ ›

5008009701000110015901600170018001900 510–799840–9691010–10991160–1589

1

1

1

1

1

1

2

1

5

2

18 +12

4

2

2

2

2

3

4

1

10 +4

1

6

2

2

7 +1

2

5

No year recorded 108

+102

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 ↗