Derbyshire sump index.
Contributors: Murland, Jerry D.; Cave Diving Group.
Edition: 3rd ed. / revised by Trevor D. Ford and Jerry D. Murland.
Publisher: Cave Diving Group
Published: 1980
Place of publication: Bristol (c/o O.C. Lloyd, Withey House, Withey Close West, Bristol BS9 3SX)
Language: eng
Number of pages: 41
Subjects: Cave diving -- England -- Derbyshire -- History.
Notes: Previous ed., 1974.