Changes in stratigraphic nomenclature by the U.S. Geological Survey.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Serial
Language:	English
Series:	Geological Survey bulletin ; 1457-A. Contributions to stratigraphy.
Subjects:	Geology, Stratigraphic > Nomenclature > Periodicals.

Description
Item Description:	1977.
Physical Description:	volumes ; 23 cm.