@article{oai:toyo.repo.nii.ac.jp:00001726, author = {斎藤, 孝 and サイトウ, タカシ and Saito, Takashi}, issue = {2}, journal = {経済論集, The economic review of Toyo University}, month = {Mar}, note = {P(論文)}, pages = {21--31}, title = {戦前期の日本における特許の数量分析}, volume = {32}, year = {2007} }