@article{oai:naruto.repo.nii.ac.jp:00026853,
 author = {位頭, 義仁 and Ito, Yoshihito},
 journal = {鳴門教育大学研究紀要, Research bulletin of Naruto University of Education},
 month = {},
 pages = {85--106},
 title = {精神遅滞児の保存概念の学習 I. 導入},
 volume = {5},
 year = {1990},
 yomi = {イトウ, ヨシヒト}
}