Challenging the deep.
By: Translated by Ewald Osers.
Publisher: W. Morrow
Published: 1973
Place of publication: New York
Language: eng
Number of pages: 266
Subjects: Hass, Hans.; Hass, Hans.; Skin diving.; Marine biology.; Skin divers -- Biography.
Notes: Translation of In unberührte Tiefen.
Autobiographical.