Caves - Encyclopedias.

[NT 60487] Overview

[NT 60478] Works:	1 [NT 60520] works in 1 [NT 60521] publications in 1 [NT 60522] languages

[NT 60480] Titles

Encyclopedia of caves [NT 59711] by: Culver, David C. (1944-); White, William B. (1934-) ([NT 8598] Electronic resources)