@article{oai:soar-ir.repo.nii.ac.jp:00015269, author = {柳澤, 延房}, issue = {2}, journal = {蠶絲學雜誌}, month = {Nov}, note = {Article, 蠶絲學雜誌 13(2): 105-134(1941)}, pages = {105--134}, title = {家蠶繭形の數學的表示と營繭中に於ける蠶の運動(I)}, volume = {13}, year = {1941} }