Eavenson, Howard Nicholas, 1873-1953.
The Pittsburgh coal bed : its early history and development / by Howard N. Eavenson.
New York : American Institute of Mining and Metallurgical Engineers, 1938.
"Partial list of works consulted": p. 48-55.
Coal mines and mining -- Pennsylvania -- Pittsburgh.
Coal mines and mining -- West Virginia.
Coal mines and mining -- Maryland.
Coal mines and mining -- Ohio.
If you are not immediately redirected, please click
here