Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tsujimura Yasuo,Special Education and Rehabilitation,The Japanese Journal of Special Education,03873374,The Japanese Association of Special Education,1965,2,Special,1-4,https://cir.nii.ac.jp/crid/1390282679630489472,https://doi.org/10.6033/tokkyou.2.1