Columbia subject headings:
Hydrothermal deposits--Canada.
Hydrothermal deposits--Ecuador.
Hydrothermal deposits--Nevada.
Harvard subject headings:
Hydrothermal deposits--Canada.
Hydrothermal deposits--Ecuador.
Hydrothermal deposits--Nevada.
Princeton subject headings:
Hydrothermal deposits--Canada.
Hydrothermal deposits--Ecuador.
Hydrothermal deposits--Nevada.