CTS 90.1257: University of Bristol Speleological Society Newsletter. Volume 6 No. 3 Winter 1990 pp18-23 and front cover.

Another Brick in the Wall.

This article appeared in University of Bristol Speleological Society Newsletter Volume 6 No. 3 Winter 1990 pp18-23 and front cover. and is reproduced with the permission of the author and UBSS.
The master copy can be viewed on the UBSS web site at

A local copy is reproduced here.