@article{NARMS:SourceID:419536, author = {Mark, E. L.}, journal = {Memoirs of the Museum of Comparative Zoology at Harvard College}, issue = {3}, pages = {5-52}, title = {Selections from embryological monographs. III. Polyps}, url = {https://vliz.be/vmdcdata/narms/narms.php?p=sourcedetails&id=419536}, volume = {9}, year = {1884} }