"Sekka zusetsu", Japanese book about snow crystal written by Doi Toshitsura in 1832. Exhibit in the National Museum of Nature and Science, Tokyo, Japan.

Doi Toshitsura (土井 利位, June 15, 1789 – July 31, 1848) was a Japanese daimyō of the Edo period, who ruled the Koga Domain. He served as a rōjū for Tokugawa Ienari during the Tokugawa shogunate.

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Preceded by 45th Kyoto Shoshidai
1837–1838
Succeeded by