@article{oai:repository.dl.itc.u-tokyo.ac.jp:00037955,
 author = {Ikeda, Iwaji},
 issue = {4},
 journal = {The journal of the College of Science, Imperial University of Tokyo, Japan = 東京帝國大學紀要. 理科},
 month = {Oct},
 note = {application/pdf},
 pages = {507--592},
 title = {Observations on the Development, Structure and Metamorphosis of Actinotrocha},
 volume = {13},
 year = {1901}
}