@article{oai:repository.dl.itc.u-tokyo.ac.jp:00037945,
 author = {Ijima, Isao},
 journal = {The journal of the College of Science, Imperial University of Tokyo, Japan = 東京帝國大學紀要. 理科},
 month = {Apr},
 note = {application/pdf},
 pages = {1--299},
 title = {Studies on the Hexactinellida.  Contribution 1. (Euplectellidae)},
 volume = {15},
 year = {1901}
}