by A. E. Grosz
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Titanium-zirconium-rare-earth placer res...
Heavy-mineral concentrations associated ...
Application of total-count aeroradiometr...
Geologic interpretation of the gamma-ray...
NURE geochemical and geophysical surveys...
Rare earth elements in the Cason shale o...
King Solomon's Mines
Roughing It
Laws, etc
Der Schatz der Sierra Madre
Sixteenth census of the United States