Columbia subject headings:
Environmental policy--Andes Region.
Factory and trade waste--Andes Region.
Industries--Environmental aspects--Andes Region.
Harvard subject headings:
Environmental policy--Andes Region.
Factory and trade waste--Environmental aspects--Andes Region.
Industries--Environmental aspects--Andes Region.
Princeton subject headings:
Environmental policy--Andes Region.
Factory and trade waste--Andes Region.
Industries--Environmental aspects--Andes Region.