Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAKAOKA Nobuo and KONNO Kouichi and OBA Yoshio and KONDA Tadashi,"K-Ar dating of lavas from Zao volcano, north-eastern Japan.",The Journal of the Geological Society of Japan,00167630,The Geological Society of Japan,1989,95,3,157-170,https://cir.nii.ac.jp/crid/1390001206237697280,https://doi.org/10.5575/geosoc.95.157