Buoyant aids for swimming instruction - Part 2: Safety requirements and test methods for buoyant aids to be held; German version EN 13138-2:2021— 34 стр.
Buoyant aids for swimming instruction - Part 2: Safety requirements and test methods for buoyant aids to be held; German version EN 13138-2:2014— 22 стр.
Buoyant aids for swimming instruction - Part 2: Safety requirements and test methods for buoyant aids to be held; German and English version prEN 13138-2:2020
Buoyant aids for swimming instruction - Part 2: Safety requirements and test methods for buoyant aids to be held; German version EN 13138-2:2014— 22 стр.
