| Authors(s) | Pennypacker, M. I. |
| Year | 1938 |
| Title | The chromosomes in the maturation of the germ cells of two species of triclad Turbellarians. J. Morph. 63: 421-436. |
| Authors(s) | Pennypacker, M. I. |
| Year | 1938 |
| Title | The chromosomes in the maturation of the germ cells of two species of triclad Turbellarians. J. Morph. 63: 421-436. |