ISBN 0939748525 books & textbook
A Guide to Speleological Literature of the English Language: 1794-1996
Emily Mobley Ken Ingham Bill Mixon Mobley, Emily Ingham, Ken Mixon, Bill Diana E. Northup
Cave Books /2009-10-29 Paperback / 539 Pages
isbn-10: 0939748525 / isbn-13: 9780939748525
