Transactions of the Royal Geological Society of Cornwall, Vol.4 p21 - 28
| Some Observations on Metalliferous Veins, and their Electro-magnetic Properties, Robert W Fox, [Read October 1830], IV: 21-28. |
| Some Observations on Metalliferous Veins, and their Electro-magnetic Properties, Robert W Fox, [Read October 1830], IV: 21-28. |