@book{bhlitem169308, title = {Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 18, Cyclostomata, Ctenostomata (Ectoprocta), and Entoprocta of the Gulf of California. American Museum novitates ; no. 2144 }, copyright = {Not provided. Contact Holding Institution to verify copyright status.}, url = {https://www.biodiversitylibrary.org/item/169308}, note = {https://www.biodiversitylibrary.org/bibliography/91691}, publisher = {1963}, author = {Puritan-American Museum of Natural History Expedition to Western Mexico (1957) and Soule, John D.}, year = {}, pages = {0}, }