Bennett, Paul (July 2006), Rome's Ruins, National Geographic Magazine, สืบค้นเมื่อ 2009-05-03
แหล่งข้อมูลอื่น
National Speleological Society
The Virtual Cave, an online guide to speleothems
Biospeleology; The Biology of Caves, Karst, and Groundwater, by Texas Natural Science Center, the University of Texas at Austin and the Missouri Department of Conservation
, a communication platform for physical speleology and karst science research
National Cave Research and Protection Organization, India
, sponsored by Hoosier National Forest and Indiana Karst Conservancy
(International Journal of Speleology) (in English, Italian, French, German, and Spanish)
Caving News, Daily news and articles on caves, caving, speleology, karst and other information for cavers.
ตุลาคม 12, 2021
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