@article{oai:minpaku.repo.nii.ac.jp:00002955,
 author = {Krauss, Michael},
 journal = {Senri Ethnological Studies},
 month = {Mar},
 pages = {1--34},
 title = {The Indigenous Languages of the North : A Report on Their Present State},
 volume = {44},
 year = {1997}
}