Studies in speleology.
William Pengelly Cave Studies Trust.
Association of the Pengelly Cave Research Centre.
London : Association of the Pengelly Cave Research Centre,
1964-
GeoRef
Vols. for 1964-67 published by the Association of the Pengelly Cave Research Centre; 1969-   by William Pengelly Cave Studies Trust Ltd.
Combined indexes v. 2, includes index to the Journal and Proceedings of the British Speleological Association as well as Cave science, Caves and caving and Studies in speleology.
Speleology
Caves