@article{oai:tsukuba.repo.nii.ac.jp:00050221, author = {土本, 武司 and TSUCHIMOTO, Takeshi}, journal = {筑波法政, Tsukuba Review of Law and Political Science}, month = {Mar}, pages = {48--66}, title = {<論説>義務の衝突}, volume = {12}, year = {1989} }