| Type | Chapter |
| Authors(s) | Blanchard, E. |
| Year | 1842a |
| Title | Astemma |
| Gepubliceerd in | Dictionnaire universel d'histoire naturelle (C. d'Orbigny, ed.) 2: 247-248 |
| Published in/Publisher | D'Orbigny, Paris |
| Type | Chapter |
| Authors(s) | Blanchard, E. |
| Year | 1842a |
| Title | Astemma |
| Gepubliceerd in | Dictionnaire universel d'histoire naturelle (C. d'Orbigny, ed.) 2: 247-248 |
| Published in/Publisher | D'Orbigny, Paris |