@article{oai:tsukuba.repo.nii.ac.jp:00021887,
 author = {井田, 範美 and Ida, Noriyoshi},
 issue = {1},
 journal = {心身障害学研究},
 month = {Feb},
 pages = {11--19},
 title = {精神遅滞児の数の発達及びその指導的問題（序報）},
 volume = {6},
 year = {1982}
}