@Book{sitereport_122910,
 author = "土浦市立博物館, ",
 title = "土浦市立博物館紀要",
 volume = "31",
 publisher = "土浦市立博物館",
 year = 2021,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/122910,
 }