| author: | Hyman LH |
| title: | Studies on the morphology, taxonomy, and distribution of North American triclad Turbellaria. II. On the distinctions between Planaria agilis and Planaria dorotocephala with notes on the distibution of agilis in the western United States. |
| publication: | Transact Amer Microsc Soc 48: 406-415 |
| year: | 1929 |