@Book{sitereport_96854,
 author = "牛堀町文化財保護委員会, ",
 title = "常陸観音寺山古墳群",
 volume = "",
 publisher = "牛堀町文化財保護委員会",
 year = 0,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/96854,
 }