2017DIN EN 16870:2017-05 Water quality - Guidance standard on determining the degree of modification of lake hydromorphology; German version EN 16870:2017
2017DIN EN 16870:2017 Water quality - Guidance standard on determining the degree of modification of lake hydromorphology
1970DIN EN 16870 E:2015-07 Water quality - Guidance standard on determining the degree of modification of lake hydromorphology