XXVI.—Researches on the development of the Pectinibranchiata
Koren, Johan, 1809-1885
Danielssen, D. C. (Daniel Cornelius), 1815-1894
The Annals and magazine of natural history; zoology, botany, and geology
London,Taylor and Francis, Ltd.
Public domain. The BHL considers that this work is no longer under copyright protection.