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N.B. Unless you see held by: BCL, please do not expect the BCL to be able to supply further information
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Cave Research Group of Gt. Britain (CRG) : Newsletter106 (Jun 1967) held by: BCL| Page | Author | Content | Tag |
| 6 | D.Brandon; G.K.Lyon | A Jig for High-speed Rung Drilling | technical |
Cave Research Group of Gt. Britain (CRG) : Newsletter106 (Jun 1967) held by: BCL| Page | Author | Content | Tag |
| 15 | D.Brandon; G.K.Lyon | Reclamation of Resin-fixed Rungs | technical |