Academic Press · Welsh Books Council
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Activity Pack Series: Owain Glyndwr | 978-88-88043-60-9 (88-88043-60-8) | 2004 | D.C. Perkins |
| The biology of estuaries and coastal waters | 978-0-12-550750-9 (0-12-550750-X) | 1974 | |
| Wales: Activity Pack | 978-88-88043-87-6 (88-88043-87-X) | 2004 | D.C. Perkins |
E. J. · Edward J. Perkins · Edwin J. Perkins · J. P. · J. Perkins