Geologic structure map of the northwestern Illinois zinc-lead district /

Bibliographic Details
Main Author:	Bradbury, James C.
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1956.
Series:	Circular (Illinois State Geological Survey) ; 214.
Subjects:	Geology, Structural. Geology > Illinois. Geology > Maps.

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