Columbia subject headings:
Mineral rights--Washington (State)--Mount Saint Helens National Volcanic Monument.
Mount Saint Helens National Volcanic Monument (Wash.)
Public lands--Economic aspects--United States.
United States. National Park Service.
Harvard subject headings:
Mineral rights--Washington (State)--Mount Saint Helens National Volcanic Monument.
Mount Saint Helens National Volcanic Monument (Wash.)
Public lands--Economic aspects--United States.
United States. National Park Service
Princeton subject headings: