@article{oai:ismrepo.ism.ac.jp:00033229,
 author = {青山, 博次郎 and Aoyama, Hirojiro},
 issue = {12},
 journal = {統計数理研究所講究録},
 month = {Mar},
 pages = {506--507},
 title = {学校調査について(第三部)},
 volume = {7},
 year = {1952}
}