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| Title | The Ease Gill System |
| Author | Eyre,J |
| Date | 1989 |
| Pages | 48 |
| Publisher | BCRA Speleo History Series No 1 |
| Copyright © | BCRA |
| ISBN | 0 900265 10 8 |
| Subject | Caves Britain Dales |
| Number | 1521 |
| Type | Book |