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<p>Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
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<br>Subjects: iron; ore; marl; magnetic; ores; geological; phosphoric; anthracite; furnace; specimens; magnetic iron; phosphoric acid; green sand; pig iron; public domain; wrought iron; magnetic needle; southern division; monmouth county; iron ore</div>
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New Jersey Geological Survey,  New Jersey Geological Survey</div>
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