| Author | Calkins, C.N. |
| Title | On Uroglena, a genus of colony-building infusoria observed in certain water supplies of Massachusetts |
| Journal Title | Annual Report Massachusetts State Board of Health |
| Date of Publication | 1892 |
| Volume | 23 |
| Page(s) | 647-657 |
| Geographical | USA |
| Keywords | Chrysophyta; colonial; Infusoria; water supplies |
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