|Author:||Eavenson, Howard N. (Howard Nicholas), 1873-1953|
|Title:||The Pittsburgh coal bed: its early history and development|
The Pittsburgh coal bed its early history and development
Eavenson, Howard N. (Howard Nicholas), 1873-1953
New York: American Institute of Mining and Metallurgical Engineers, 1938
|Publication Info:||Pittsburgh: University of Pittsburgh, Digital Research Library
This work is believed to be in the public domain with no known restrictions on access and use.
Coal mines and mining--Pennsylvania--Pittsburgh.
Coal mines and mining--West Virginia.
Coal mines and mining--Maryland.
Coal mines and mining--Ohio.
The Pittsburgh coal bed: its early history and development