KELLER, W. D.
Clay minerals in the Morrison formation of the Colorado plateau / by W. D. Keller. -- Washington : United States Government Printing Office, 1962 - 90 p. + map. -- (Geological Survey Bulletin ; 1150).
Colorado
Rocas arcillosas
552.52(788)
Clay minerals in the Morrison formation of the Colorado plateau / by W. D. Keller. -- Washington : United States Government Printing Office, 1962 - 90 p. + map. -- (Geological Survey Bulletin ; 1150).
Colorado
Rocas arcillosas
552.52(788)