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AbwVwV HE 20-24
Twentieth to twentyfourth general administrative regulations on the minimum requirements for the discharge of sewage into waters
Edition
1982-06-29
AbwVV NW 1982
Administrative regulations on minimum requirements on the discharge of sewage into waters
Edition
1982-07-07
ÜbwAnlBergbRL TH
Richtlinie für überwachungsbedürftige Anlagen in den der Bergaufsicht unterliegenden Betrieben
Edition
1997-01-02