| Authors(s) | Hayward, P.J. & J.S. Ryland |
| Year | 1990 |
| Title | The Marine Fauna of the British Isles and North-West Europe. Clarendon Press, Oxford. |
| Authors(s) | Hayward, P.J. & J.S. Ryland |
| Year | 1990 |
| Title | The Marine Fauna of the British Isles and North-West Europe. Clarendon Press, Oxford. |