@book{bhlitem16403, title = {Die Tier- und Pflanzenwelt des Süsswassers : Einführung in das Studium derselben }, volume = {1}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/16403}, note = {https://www.biodiversitylibrary.org/bibliography/1337}, publisher = {Leipzig, J. J. Weber, 1891}, author = {Zacharias, Otto,}, year = {1891}, pages = {404}, keywords = {Freshwater biology}, }