DIN EN 15843:2010-05 Water quality - Guidance standard on determining the degree of modification of river hydromorphology; German version EN 15843:2010
2010DIN EN 15843:2010-05 Water quality - Guidance standard on determining the degree of modification of river hydromorphology; German version EN 15843:2010
2010DIN EN 15843:2010 Water quality - Guidance standard on determining the degree of modification of river hydromorphology; German version EN 15843:2010