London: Neville Spearman, 1961. First Thus. Hardcover. 5 1/2 X 8 3/4 Inches. 164 PP. Near Fine / Very Good. Item #1359
First English edition after the French (1958). Possibly the most well-known cave-diver of the 20th Century. Original publisher blue cloth binding. Original dust jacket price-clipped. Slight wear to DJ edges and folds. A clean copy overall.