Columbia subject headings:
Harvard subject headings:
Hydrogeology--Germany--Grosse Röder River Region.
Water--Nitrogen content--Germany--Grosse Röder River Region.
Water--Purification--Germany--Grosse Röder River Region.
Princeton subject headings:
Hydrogeology--Germany--Grosse Röder River Region.
Water--Germany--Grosse Röder River Region--Nitrogen content.
Water--Germany--Grosse Röder River Region--Purification--Nitrogen removal.