What has the author Hans Hass written?

Answer 1

Hans Hass has written:

'Aventuras y Exploraciones Submarinas'

'Diving to adventure' -- subject(s): Photography of fishes, Spear fishing

'Manta'

'Im Roten Meer' -- subject(s): Underwater exploration

'Der Hai im Management. Instinktverhalten erkennen und kontrollieren'

'Menschen und Haie' -- subject(s): Biological Photography, Marine Biology, Voyages and travels

'Beitrag zur Kenntnis der Reteporiden'

'Men beneath the sea' -- subject(s): Marine biology, Skin-diving

'Men and sharks' -- subject(s): Biological Photography, Marine biology, Voyages and travels