hass, hans books & textbook
Diving to Adventure: The Daredevil Story of Hunters Under the Sea
Doubleday & Co. /1951T Hardcover
Challenging the Deep (English and German Edition)
William Morrow & Co /1976T Hardcover / 266 Pages
isbn-10: 0688001408 / isbn-13: 9780688001407
Men beneath the sea: Man's conquest of the underwater world
St. Martin's Press /1975T Hardcover / 407 Pages
Manta;: Under the Red Sea with spear and camera
Rand, McNally /1953T Hardcover / 278 Pages
The Human Animal: The Mystery Of Man's Behavior
G.P. Putnam's Sons /1970T Hardcover
