@misc{oai:obihiro.repo.nii.ac.jp:00003404,
 author = {Yanagawa, Hisashi and 柳川, 久},
 month = {Mar},
 note = {application/pdf, 助成番号562},
 title = {樹洞の野生動物に対する有用性の研究},
 year = {2004}
}