@article{oai:tsukuba.repo.nii.ac.jp:00005253,
 author = {石塚, 経雄 and Ishizuka, Tsuneo},
 journal = {倫理学, ETHICS},
 month = {Mar},
 pages = {1--15},
 title = {無の自由から創造的倫理へ : 真の自由への道序論},
 volume = {6},
 year = {1988}
}