@article{oai:u-nagano.repo.nii.ac.jp:00000447,
 author = {日下, 正一 and Kusaka, Shoichi},
 journal = {長野県短期大学紀要, Journal of Nagano Prefectural College},
 month = {Dec},
 note = {40002771482, application/pdf},
 pages = {95--104},
 title = {「九・十歳の壁」論と発達心理学的課題 : 児童期の発達研究Ⅰ},
 volume = {44},
 year = {1989},
 yomi = {クサカ, ショウイチ}
}