Columbia subject headings:
Harvard subject headings:
Columbia Plateau.
Geology, Structural.
Geology--Washington (State)--Columbia Plateau.
Geomorphology--Washington (State)--Columbia Plateau.
Radioactive waste disposal--Washington (State)--Columbia Plateau.
Princeton subject headings:
Basalt--Washington (State)--Columbia Plateau.
Geology, Structural.
Geology--Washington (State)--Columbia Plateau.
Geomorphology--Washington (State)--Columbia Plateau.