@book{bhlitem52119, title = {Die Chaetognathen : ihre Anatomie, Systematik und Entwicklungsgechichte : eine Monographie }, volume = {Hft.2}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/52119}, note = {https://www.biodiversitylibrary.org/bibliography/15245}, publisher = {Jena, G. Fischer, 1880}, author = {Hertwig, Oscar,}, year = {1880}, pages = {162}, keywords = {Chaetognatha|}, }