Livre
| Publisher | Gwasg Carreg Gwalch |
| Item Height | 198mm |
| Language | Welsh |
| Author | Gareth F. Williams |
| Special Attributes | EX-LIBRARY |
| Book Title | Gem, Y |
| Item Width | 130mm |
| Publication Name | Gwasg Carreg Gwalch |
| Publication Year | 2014 |
| Genre | Children & Young Adults |
| Format | Paperback |
| Number of Pages | 207 Pages |