Regional maps of vertical magnetic intensity in Illinois /

Bibliographic Details
Main Author:	McGinnis, Lyle David
Other Authors:	Heigold, Paul C.
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1961.
Series:	Circular (Illinois State Geological Survey) ; 324.
Subjects:	Geomagnetism.

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