Refraction seismic investigations Rosiclare fluorspar district, Illinois.

Bibliographic Details
Main Author:	Johnson, Robert Britten, 1924-
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1957-
Series:	Circular (Illinois State Geological Survey) ; 231.
Subjects:	Refraction. Fluorspar. Geology > Illinois > Hardin County. Geology > Research.

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