Transactions of the Royal Geological Society of Cornwall, Vol 10, p98 - 100
| Note on the Occurrence of Stanniferous Deerhorns in the Tin-gravels of Cornwall, J H Collins, X: 98-100, 1880. |
| Note on the Occurrence of Stanniferous Deerhorns in the Tin-gravels of Cornwall, J H Collins, X: 98-100, 1880. |