Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleHans Hass Celebrates 90th Birthday.AbstractThe article announces the 90th birthday of Professor Hans Hass of the Historical Diving Society.SubjectsHASS, Hans; DIVING; SOCIETIESPublicationJournal of Diving History, 2009, Vol 17, Issue 1, p5ISSN1946-4770Publication typeArticle