Freeman Bibliographical Database
| Identifier: | A4674 |
| Date: | 1866--1868 |
| Concise reference: | Hyatt, Alpheus. 1866-1868. Observations on Polyzoa. Suborder Phylactolaemata. Proceedings of the Essex Institute, (1866-68) 4: 197-228. [Darwin Pamphlet Collection] |