"This book is the third edition of The sandstone caves of Nottingham, which was originally produced as an offprint from the Mercian Geologist, the journal of the East Midlands Geological Society"--T.p. verso.
Sandstone caves of Nottingham by Tony Waltham. ISBN 9780951971727. Published by East Midlands Geological Society in 2008. Publication and catalogue information, links to buy online and reader comments.