(a)
Council Directive 91/676/EEC of 12 December 1991 concerning the protection of waters against pollution caused by nitrates from agricultural sources · European Union
available scientific and technical data, mainly with reference to respective nitrogen contributions originating from agricultural and other sources;
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Source: EUR-Lex CELLAR · retrieved 2026-08-09 · Text as consolidated on 2026-03-02; changes after this date are not shown.