Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "OTSUKA, Yoshiaki and IKEYA, Nobuyuki and IIDA, Shigeo and ASAI, Takuya and ISHIMURA, Fumi and HIRAKŌCHI, Tsuyoshi","The Uniqueness of the Stone Tool Assemblage from the Hokuto-type Period and What it Tells about Human Activities: With a Special Focus in the Piragaoka Site, Shari Town",Journal of the Society of Humanities,0916-3166,札幌学院大学総合研究所,2022-10-31,,112,89-153,https://cir.nii.ac.jp/crid/1050294252784770560,