Vol. s3-14, Issue 83, 1877November 01, 1877 EDT
History of Cavern Exploration in Devonshire, England; Part II
History of Cavern Exploration in Devonshire, England; Part II
W. Pengelly,
Pengelly, W. (1877). History of cavern exploration in Devonshire, England; Part II. American Journal of Science, s3-14(83), 387–394. https://doi.org/10.2475/ajs.s3-14.83.387