@Book{sitereport_109790,
 author = "千葉県文化財センター, ",
 title = "銚子市余山貝塚確認調査報告書",
 volume = "",
 publisher = "千葉県教育委員会",
 year = 1989,
 series = "千葉県主要貝塚確認調査報告書",
 number = "1",
 url = https://sitereports.nabunken.go.jp/109790,
 }