Norton, James J. 1918-2005
Geology of the Hugo Pegmatite Keystone, South Dakota / J.J. Norton, L.R. Page and D.A. Brobst. -- Washington : United States Government Printing Office, 1962 - P. 49-127 + 1 map. -- (Geological Survey Professional Paper ; 297-B).
Dakota del Sur
Geología
55(783)
Geology of the Hugo Pegmatite Keystone, South Dakota / J.J. Norton, L.R. Page and D.A. Brobst. -- Washington : United States Government Printing Office, 1962 - P. 49-127 + 1 map. -- (Geological Survey Professional Paper ; 297-B).
Dakota del Sur
Geología
55(783)