* 改元手続き

[1] 
[CITE@ja-JP[神皇正統記論考]], [[我妻建治]], [TIME[1981.10][1981]], [TIME[2026-01-20T01:30:11.000Z]], [TIME[2026-02-13T04:41:08.620Z]] <https://dl.ndl.go.jp/pid/12210668/1/19> (要登録)

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