Kunstformen der Natur.
Leipzig und Wien :Verlag des Bibliographischen Instituts,1904.
University Library, University of Illinois Urbana Champaign
University of Illinois Urbana-Champaign
First page of explanatory text for Tafel 90 is lacking. Page is available in the copy contributed by Smithsonian Libraries, see https://www.biodiversitylibrary.org/page/47388437#page/477/mode/1up
Public domain. The BHL considers that this work is no longer under copyright protection.