@article{oai:repository.dl.itc.u-tokyo.ac.jp:00025332,
 author = {ISHIDA, Ken and IGARASHI, Yuji and SAWADA, Haruo and SAKAI, Hideo},
 journal = {東京大学農学部演習林報告},
 month = {},
 pages = {65--71},
 title = {An Aerial Survey of Large Mammals in Chichibu Mountains, Central Japan},
 volume = {109},
 year = {2003}
}