Columbia subject headings:
Harvard subject headings:
Gold mines and mining--Economic aspects--Amazon River Region.
Gold mines and mining--Environmental aspects--Amazon River Region.
Gold mines and mining--Environmental aspects.
Gold mines and mining--Social aspects--Amazon River Region.
Mercury--Environmental aspects--Amazon River Region.
Mercury--Environmental aspects.
Princeton subject headings:
Gold mines and mining--Economic aspects--Amazon River Region.
Gold mines and mining--Environmental aspects--Amazon River Region.
Gold mines and mining--Environmental aspects.
Gold mines and mining--Social aspects--Amazon River Region.
Mercury--Environmental aspects--Amazon River Region.
Mercury--Environmental aspects.