Recreational diving services - Requirements for the training of recreational scuba divers - Part 3: Level 3 - Dive leader (ISO/DIS 24801-3:2012); German version prEN ISO 24801-3:2012
Recreational diving services - Requirements for the training of recreational scuba divers - Part 3: Level 3 - Dive leader (ISO 24801-3:2014); German version EN ISO 24801-3:2014— 20 стр.