3 R D Penhallurick · D. P. · R.D. · R. P.
CRC Press · Headland Publications
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Birds Of Cornwall And The Isle Of Scilly | 978-0-905920-07-8 (0-905920-07-4) | 1978 |
| Tin in Antiquity: Its Mining and Trade Throughout the Ancient World with Particular Reference to Cornwall | 978-0-904357-81-3 (0-904357-81-3) | 1986 |