International Symposium on VulcanospeleologyA Special Session of the 29th Annual Convention of the National Speleological Society
White Salmon, Washington, 16 August 1972.
Author: William R. Halliday (Editor)
Publisher: Western Speleological Survey, Seattle, 1976.
Number of Pages: 85
Proceedings of the International Symposium on Vulcanospeleology and its Extraterrestrial Applications