Columbia subject headings:
Coal mines and mining--Environmental aspects--Germany--Bitterfeld-Wolfen.
Industries--Environmental aspects--Germany--Bitterfeld-Wolfen.
Lignite industry--Environmental aspects--Germany--Bitterfeld-Wolfen.
Reclamation of land--Environmental aspects--Germany--Bitterfeld-Wolfen.
Strip mining--Environmental aspects--Germany--Bitterfeld-Wolfen.
Harvard subject headings:
Chemical industry--Environmental aspects--Germany--Bitterfeld Region.
Coal mines and mining--Environmental aspects--Germany--Bitterfeld Region.
Environmental degradation--Germany--Bitterfeld Region.
Industries--Environmental aspects--Germany--Bitterfeld.
Lignite industry--Germany--Bitterfeld Region.
Reclamation of land--Environmental aspects--Germany--Bitterfeld Region.
Strip mining--Environmental aspects--Germany--Bitterfeld Region.
Princeton subject headings: