Reports of the Inspectors of Mines of the anthracite and bituminous coal regions of Pennsylvania for the year ...
Reports of the Inspectors of Coal Mines of Pennsylvania
Reports of the Inspectors of Mines of the anthracite coal regions of Pennsylvania for the year ...
[S.l. : s.n.], 1889-
> Department of Mines and Mineral Industries.
Coal mines and mining > Pennsylvania > Periodicals.
Part V of the report of the Department of Internal Affairs.
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