Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TOYONAGA Kohei,"Educational Expansion, Economic Growth and Educational Credentials:",The Journal of Educational Sociology,03873145,THE JAPAN SOCIETY OF EDUCATIONAL SOCIOLOGY,2018-11-30,103,0,47-68,https://cir.nii.ac.jp/crid/1390003825193608576,https://doi.org/10.11151/eds.103.47