Stratigraphic policy of the Illinois State Geological Survey /

Bibliographic Details
Main Author:	Willman, H. B. (Harold Bowen), 1901-
Format:	Book
Language:	English
Published:	Urbana : Division of the Illinois State Geological Survey, 1958.
Series:	Circular (Illinois State Geological Survey) ; 249.
Subjects:	Geology > Nomenclature. Rocks > Classification. Illinois State Geological Survey. Geology, Stratigraphic.

Description
Physical Description:	14 pages
Bibliography:	Bibliography: page 14.