Author Title Journal ISSN Publisher Date Volume Number Page URL URL(DOI) Kuroda Masahiro On the changes of the Thought in the Description of the Commentary Books of "Jitsugokyo" and "Dojikyo" Bulletin of Faculty of the Education, Hiroshima University. Part 1, Educational research 09198660 Hiroshima University 1992-03-27 40 75-82 http://ci.nii.ac.jp/naid/110000557916/en/