Specifications for installations inside buildings conveying water for human consumption - Part 5: Operation and maintenance; German version prEN 806-5:2009
Codes of practice for drinking water installations - Part 100: Protection of drinking water, drinking water quality control; DVGW code of practice— 19 стр.
Specifications for installations inside buildings conveying water for human consumption - Part 5: Operation and maintenance; German version EN 806-5:2012— 32 стр.
