Farmdale drift in northwestern Illinois.

Bibliographic Details
Main Author: Shaffer, Paul R. (Paul Raymond), 1910-
Format: Book
Language:English
Published: Urbana, [publisher not identified] ; 1956.
Series:Report of investigations (Illinois State Geological Survey) ; no. 198.
Subjects:
Description
Physical Description:25 pages : illustrations
Bibliography:Bibliography: page 25.