Authors I
| Author | Article | Reference |
|---|---|---|
| IBBERSON, Paul | P5. Long onslaught opens up virgin limestone under Clapham Bottoms | (70), May 1986, pp22-4 |
| IBBERSON, Paul & HOUGHTON, Ian | Views of Speleomania [1st International Conference of Adventure Sports] | (88), June 1989, pp34-5 |
| IRWIN, Dave | St. Cuthbert’s. How the breakthrough was made | (10), Jan 1970, pp15-17 |
| Death of Dr. E.K. Tratman | (40), Jan 1979, p15 | |
| A Minor Mendip Centenary [Lamb Leer] | (117), April 1994, pp30-1 | |
| Swildon’s: the first hundred [anniversary of exploration] | (162), Oct 2001, p31 |