@article{oai:ismrepo.ism.ac.jp:00033080,
 author = {池田, 豊作 and Ikeda, Toyosaku},
 issue = {12},
 journal = {統計数理研究所講究録},
 month = {Mar},
 pages = {479--483},
 title = {標本抽出法に関する一考察},
 volume = {5},
 year = {1950}
}