@Book{sitereport_131555,
 author = "日本戦跡協会, ",
 title = "東山防空指揮所・蛇島 報告書",
 volume = "",
 publisher = "",
 year = 2021,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/131555,
 }