The Geological Society of America

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The Geological Society of America provides access to elements that are essential to the professional growth of earth scientists at all levels of expertise and from all sectors: academic, government, business, and industry.
ANTHRACITIC COAL FROM PRECAMBRIAN UPPER HURONIAN BLACK SHALE OF THE IRON RIVER DISTRICT, NORTHERN MICHIGAN
S. A. TYLER
Geological Society of America Bulletin(1957),68(10):1293
http://dx.doi.org/10.1130/0016-7606(1957)68[1293:ACFPUH]2.0.CO;2

The Geological Society of America
The Geological Society of America
GeoScienceWorld
GeoScience World