00993naa a2200241M 4500100442150MiAaHDL20230718000000.0m d cr bn ---auaua940726s1903 nyuf 000 0 eng dsdr-hvd.990050965470203941(MH)005096547HVD01-Aleph(MH)Aleph005096547(OCoLC)31084056JHEJHEHMZQL391.S5G49 1903Gerould, John Hiram,1868-1961.Studies on the embryology of the Sipunculidae. I. The embryonal envelope and its homologue. ...By John H. Gerould.1 p.l., [439]-452 p.,plate,31 cm.Includes bibliographical references (pages 450-451).Mode of access: Internet.Sipunculidae.Annelida.Mark Anniv.Vol. 1903. Art. 22. 437-452. pl. 32.Online version:Gerould, John Hiram, 1868-1961.Studies on the embryology of the Sipunculidae. 1, The embryonal envelope and its homologue.[New York] : [H. Holt], [1903](OCoLC)90353779210044215020020606095253.220230718000000.020230719060559.02025-05-11T13:33:57Z2025-05-11T13:30:03ZSDR-HVDhvdALMAprepare.pl-004-008BKsdr-hvd.990050965470203941hvdSDRHVD005096547hvd.32044107344624HVD990050965470203941HVDHVD20250511googlehvd.320441073446241903pdbibUS bib date1 < 1931