Geological Survey of Pennsylvania.  Final report ordered by Legislature, 1891. A summary description of the geology of Pennsylvania. 

 - Harrisburg,  Board of Commissioners for the Geological Survey,  1892-95. 
 - 3 v. in 4.  illus., plates, maps, diagrs.  23 cm.  and atlas of 14 fold. col. plates (incl. maps) 
<br/><br/>v. 1. Laurentian, Huronian, Cambrian and Lower Silurian formations, by J.P. Lesley.--v. 2 Upper Silurian and Devonian formations, by J.P. Lesley.--v. 3. pt. 1. Carboniferous formations, by J.P. Lesley, E.V. d'Invilliers, and A.D.W. Smith. pt. 2. Bituminous coal fields, by E.V. d'Invilliers. The new red of Bucks and Montgomery Counties, by B.S. Lyman. 
<br/><br/><label>LCCN: </label>gs 07000767  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Paleozoic.<br/>Geology--Pennsylvania.<br/>Coal--Pennsylvania.
<br/><br/><label>LC Class. No.: </label>QE654  / .P4