@article{oai:repository.dl.itc.u-tokyo.ac.jp:00037895,
 author = {Yokoyama, Matajiro},
 journal = {The journal of the College of Science, Imperial University of Tokyo, Japan = 東京帝國大學紀要. 理科},
 month = {May},
 note = {application/pdf},
 pages = {1--17},
 title = {Jurassic Ammonites from Echizen and Nagato},
 volume = {19},
 year = {1904}
}