Keefer, William R. 1924-
Frontier, cody, and Mesaverde formations in the wind river and southern Bighorn basins, Wyoming / by William R. Keefer. -- Washington : United States Government Printing Office, 1972 - 23 p. + map. -- (Geological Survey Professional Paper ; 495-E).
Geología
Wyoming
55(787)
Frontier, cody, and Mesaverde formations in the wind river and southern Bighorn basins, Wyoming / by William R. Keefer. -- Washington : United States Government Printing Office, 1972 - 23 p. + map. -- (Geological Survey Professional Paper ; 495-E).
Geología
Wyoming
55(787)