The geology of Lehigh and Northampton Counties. 
General introduction by J.P. Lesley. Slate belt and quarries, by R.N. [i.e. H.] Sanders. Water gaps, by H.M. Chance. Limestone belt and iron ore mines, by F. Prime. Itinerary survey of the mountains, by C.E. Hall. 
 - Harrisburg,  Board of Commissioners for the Second Geological Survey,  1883. 
 - xxivD3, D3-283, 4 p.  illus., plates, map, diagrs.  23 cm. and  atlas of 28 fold. maps (part col.) 
 - Second geological survey of Pennsylvania: report of progress,  D3, v. 1 .
 - Report of progress (Geological Survey of Pennsylvania),  D3, v. 1. .
<br/><br/> Atlas sheets also illustrate D3, v. 2: The geology of the South Mountain belt of Berks County, by E.V. D'Invilliers. 
<br/><br/><label>LCCN: </label>gs 07000710  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Pennsylvania--Lehigh County.<br/>Geology--Pennsylvania--Northampton County.
<br/><br/><label>LC Class. No.: </label>QE157  / .A16 vol. 16, pt. 1