@book{oai:nichibun.repo.nii.ac.jp:00001718,
 author = {Hitchcock,  R.},
 month = {Mar},
 publisher = {国際日本文化研究センター, International Research Center for Japanese Studies},
 title = {The ancient pit-dwellers of Yezo},
 volume = {5},
 year = {2014}
}