Recreational diving services - Requirements for the training of scuba instructors - Part 1: Level 1 (ISO/DIS 24802-1:2012); German version prEN ISO 24802-1:2012
Recreational diving services - Requirements for the training of scuba instructors - Part 1: Level 1 (ISO 24802-1:2014); German version EN ISO 24802-1:2014— 20 стр.