Transactions of the Royal Geological Society of Cornwall, Vol 2, p376 - 382
| On some instance of the alternate Disposition of the Primitive Strata, which have been observed in Cornwall, J Hawkins, [Read October, 1820], II: 376-382, 1822. |
| On some instance of the alternate Disposition of the Primitive Strata, which have been observed in Cornwall, J Hawkins, [Read October, 1820], II: 376-382, 1822. |