Proceedings of the third International Symposium on Vulcanospeleology : A special session of the 39th Annual Convention of the National Speleological Society, Bend, Oregon, USA, July 30-August 1, 1982 /
Proceedings of the third International Symposium on Vulcanospeleology : A special session of the 39th Annual Convention of the National Speleological Society, Bend, Oregon, USA, July 30-August 1, 1982 /
William R. Halliday (chairman).
- Washington : ABC, 1993.
- 132 p. : ill., maps
Vulcanospeleology--Congresses
Vulcanospeleology--Congresses