CRACK OF DOOM.
Edition: First American edition.
New York: Harcourt Brace & World, (1966) dj. Hardcover first edition - A young adult novel based on an actual event - A group of amateur frogmen must dive deep below the surface to inspect the foundation of a leaking dam high in the mountains of Norway.Translated from the Norwegian by Evelyn Ramsden. Map frontispiece. 137 pp.
Condition: Ex-library but with only a few markings, overall tight and clean in a very good unmarked dust jacket.