@book{2019xmu8qrm,
  title = {「蝦夷語集」索引 : 国立公文書館内閣文庫所蔵 : 昌平坂学問所旧蔵},
  author = {佐々木 利和},
  year = {2019},
  language = {ain},
  url = {https://ndlsearch.ndl.go.jp/books/R100000002-I030740881}
}