Recreational diving services - Requirements for the training of recreational scuba divers - Part 2: Level 2 - Autonomus diver (ISO/DIS 24801-2:2012); German version prEN ISO 24801-2:2012
Recreational diving services - Requirements for the training of recreational scuba divers - Part 2: Level 2 - Autonomus diver (ISO 24801-2:2014); German version EN ISO 24801-2:2014— 22 стр.