Gill, Robin James 1922-1972
Stratigraphy and composition of the sharon springs member of the Pierre Shale in Western Kansas / by James R. Gill, William A. Cobban and Leonard G. Schultz. -- Washington : United States Government Printing Office, 1972 - 50 p., [2] h. de lam. -- (Geological Survey Professional Paper ; 728).
Estratigrafía
Kansas
551.7(781)
Stratigraphy and composition of the sharon springs member of the Pierre Shale in Western Kansas / by James R. Gill, William A. Cobban and Leonard G. Schultz. -- Washington : United States Government Printing Office, 1972 - 50 p., [2] h. de lam. -- (Geological Survey Professional Paper ; 728).
Estratigrafía
Kansas
551.7(781)