Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKAMOTO AYAKA and KIM Doo-Chul and HONDA YASUKO,Challenges of ESD learning at a high school in mountainous areas,Proceedings of the General Meeting of the Association of Japanese Geographers,,The Association of Japanese Geographers,2018,2018a,0,20,https://cir.nii.ac.jp/crid/1390845713026420352,https://doi.org/10.14866/ajg.2018a.0_20