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Coal, iron, and oil; - hti.umich.edu

page [unnumbered] page [unnumbered] page 1 or, the a plain and popular work on our miines and mii'eral resorces and a txt-`t ol or 61tide ta thiir c rolwoudal ertvd 1 x7m t. mili ilrai6eromcs 4fap s (dd -el2grapy igs. illustrating and explaining the geology, origin, and formation of coal, iron, and oil, their peculiarities, characters, and general distribution, and the econoimy of miining

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