@book{bhlpg58127518, title = {Carnegie Institution of Washington publication }, volume = {no.109:v.1 (1910)}, url = {https://www.biodiversitylibrary.org/page/58127518}, publisher = {Carnegie Institution of Washington}, author = {Carnegie Institution of Washington }, year = {1910}, pages = {Page 41}, } @book{bhlpg39077324, title = {Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena }, volume = {Bd.1:Abt.1 (1879)}, url = {https://www.biodiversitylibrary.org/page/39077324}, publisher = {Fischer}, author = {Medizinisch-naturwissenschaftliche Gesellschaft zu Jena. }, year = {1879}, pages = {Page 34}, } @book{bhlpg32605547, title = {Monographie der Medusen }, volume = {T.1:pt.1 text (1879)}, url = {https://www.biodiversitylibrary.org/page/32605547}, publisher = {G. Fischer}, author = {Haeckel, Ernst, 1834 -1919}, year = {1879}, pages = {Page 34}, }