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Showing results for matthias safer. No results found for Matthias Sammer.
- ready to fill in the gaps". The Register (in English). Laakso, Mikael; Matthias, Lisa; Jahn, Najko (2021). "Open is not forever: A study of vanished open...19 KB (2,073 words) - 14:34, 2 January 2022
- whilst using air as a breathing gas, in a safe manner." One Star Diver - "a diver who is competent in the safe and correct use of all appropriate open water...45 KB (3,107 words) - 18:48, 4 December 2022