WELLS, J. D.
Petrography of radioactive tertiary igneous rocks front range mineral belt Colorado / by J. D. Wells. -- Washington : United States Government Printing Office, 1960 - P. 223-272 + map. -- (Geological Survey Bulletin ; 1032-E).
Colorado
Minerales
Petrografía
552(788)
Petrography of radioactive tertiary igneous rocks front range mineral belt Colorado / by J. D. Wells. -- Washington : United States Government Printing Office, 1960 - P. 223-272 + map. -- (Geological Survey Bulletin ; 1032-E).
Colorado
Minerales
Petrografía
552(788)