@inbook{ERMS:SourceID:7831, author = {Lendenfeld, R. von}, journal = {In: Schulze, Franz Eilhard (Ed.), Das Tierreich. 19. (Friedländer: Berlin).}, title = {Porifera. Tetraxonia. pp. vi-xv, 1-168. }, url = {https://marbef.org/data../aphia.php?p=sourcedetails&id=7831}, year = {1903} }