@article{oai:repository.dl.itc.u-tokyo.ac.jp:00037844, author = {Yokoyama, M.}, journal = {The journal of the College of Science, Imperial University of Tokyo, Japan = 東京帝國大學紀要. 理科}, month = {Mar}, note = {application/pdf}, pages = {1--18}, title = {Palæozoic Plants from China}, volume = {23}, year = {1908} }