Caves and karst of the Yorkshire Dales guidebook for the International Congress of Speleology at Sheffield 1977
Glover, R. R.
Pitty, Alistair Frank.
Waltham, Antony Clive.
International Speleological Congress(7th :1977 :Sheffield, England)
[Great Britain] 7th I.S.C. Committee Bridgwater [Distributed by] British Cave Research Association
1977
'Guidebook for the International Speleological Congress 1977' - cover
Bibliography: p.8
Caves
Karst