SCHOPF, J.M.
The Foerstia Zone of the Ohio and Chattanooga Shales / By J.M. Schopf and J.F. Schwietering. -- Washington : United States Government Printing Office, 1970 - 15 p., [2] p. de lám. -- (Geological Survey Bulletin ; 1294-H).
Fecha real de registro 26-02-1971
Estratigrafía
Ohio
551.7(771)
The Foerstia Zone of the Ohio and Chattanooga Shales / By J.M. Schopf and J.F. Schwietering. -- Washington : United States Government Printing Office, 1970 - 15 p., [2] p. de lám. -- (Geological Survey Bulletin ; 1294-H).
Fecha real de registro 26-02-1971
Estratigrafía
Ohio
551.7(771)