Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yutaka W. Watanabe and Yoshiyuki Takahashi and Takashi Kitao,Total Amount of Oceanic Excess CO2 Taken from the North Pacific Subpolar Region,Journal of oceanography,09168370,Tokyo : Oceanographic Society of Japan,1996-06,52,3,301-312,https://cir.nii.ac.jp/crid/1520573330926403200,