TAKASHIMA, Tsutomu, MASUDA, KazuhikoChiba University. Center for Environmental Remote Sensing1998-01-21Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集4p.284-287
MASUDA, Kazuhiko, SASAKI, Masayuki, TAKASHIMA, Tsutomu, ISHIDA, HiroshiChiba University. Center for Environmental Remote Sensing1998-01-21Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集4p.45-50
writers: Masao Hashimoto, Yachiyo Takashima, Tsutomu Hariu, Keigo Koyanagi, edited by Regional Promotion Committee for the Ramsar Conference in Kushiro 1993Kushiro International Wetland Centre1998<RA145-B6>