@article{oai:geitan.repo.nii.ac.jp:00000572,
 author = {久保, 不二郎 and Kubo, H.},
 journal = {研究紀要},
 month = {Mar},
 note = {P(論文)},
 pages = {21--29},
 title = {"毎日の30分練習"について},
 volume = {15},
 year = {1978}
}