Report of progress in the Fayette & Westmoveland district of the bituminous coald-fields of western Pennsylvania /
Stevenson, John James.
Report of progress in the Fayette & Westmoveland district of the bituminous coald-fields of western Pennsylvania / by J. J. Stevenson. - Harrisburg : The board of Commissioners, 1877-1878. - 2 v. ; 23 cm. - Second Geological Survey of Pennsylvania . - Second Geological Survey of Pennsylvania .
Contiene : Part I. Eastern Allegheny County and Fayette and Westmoreland Countles west from Chestnut Ridge -- Part II. The ligonier Valley
Geología---Pennsylvania.
Report of progress in the Fayette & Westmoveland district of the bituminous coald-fields of western Pennsylvania / by J. J. Stevenson. - Harrisburg : The board of Commissioners, 1877-1878. - 2 v. ; 23 cm. - Second Geological Survey of Pennsylvania . - Second Geological Survey of Pennsylvania .
Contiene : Part I. Eastern Allegheny County and Fayette and Westmoreland Countles west from Chestnut Ridge -- Part II. The ligonier Valley
Geología---Pennsylvania.
