George Hall Ashley

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Books

Rhode Island Coal

Rhode Island Coal

George Hall Ashley

Coal Reserves in Jefferson County, Pennsylvania

Coal Reserves in Jefferson County, Pennsylvania

George Hall Ashley, Ralph Walter Stone, James Donaldson Sisler

Structure and Stratigraphy of the Smicksburg Quadrangle

Structure and Stratigraphy of the Smicksburg Quadrangle

Charles Reinhard Fettke, Forrest Theodore Moyer, George Hall Ashley, Bradford Willard, Charles Karsner Graeber, Henry Leighton, Marchant Nissley Shaffner, Stanley Holman Cathcart, Richard Ellis Sherrill, T. H. Myers, Lawrence Stanley Matteson

Deposits of Manganese Ore in New Mexico

Deposits of Manganese Ore in New Mexico

Joseph Thomas Pardee, Robert Bradford Marshall, Frederick Leslie Ransome, George Hall Ashley, Arthur J[ames] Collier, Clarence C. Osbon, Edward LeRoy Jones, Eugene Thomas Hancock, Frank Rinker Clark

Analyses of Pennsylvania Bituminous Coals

Analyses of Pennsylvania Bituminous Coals

George Hall Ashley

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