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  author = {Shinsuke Kawagucci and Yuichiro Ueno and Ken Takai and Tomohiro Toki and Michihiro Ito and Kazuhiro Inoue and Akiko Makabe and Yasuyuki Muramatsu and Naoto Takahata and Yuji Sano and Taku Narita and Genta Teranishi and Hajime Obata and Satoshi Nakagawa and Takuro Nunoura and Toshitaka Gamo},
  title = {Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance to the geographical distribution of whole hydrothermal circulation},
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@inproceedings{CTT100574671,
  author = {Kazuhiro Inoue and Yuichiro Ueno and Ken Takai and Naohiro Yoshida},
  title = {Carbon and hydrogen isotopic compositions of methane in Minami-Ensei and Iheya North hydrothermal fields, Okinawa Trough},
  booktitle = {4th International Symposium on Isotopomers proceedings},
  year = 2008,
}