Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ooi Nobuo and Miura Hideki,"Estimation of the falling age of late Pleistocene tephra, Rishiri-Acharu (Rs-Ac), and reconstruction of environmental change from pollen analysis of peaty sediments at Toyotomi, northern Hokkaido, Japan",Japanese Journal of Historical Botany,0915003X,Japanese Association of Historical Botany,2004,13,1,25-30,https://cir.nii.ac.jp/crid/1390851398296072192,https://doi.org/10.34596/hisbot.13.1_25