Tectonics and Cambrian-Ordovician stratigraphy in the Central Appalachians of Pennsylvania : field conference / Sponsors: Pittsburgh Geological Society [and] Appalachian Geological Society
Published
[Place of publication not identified] : [publisher not identified], [1963?]
Cambro-Ordovician stratigraphy of Central and South-Central Pennsylvania / W.R. Wagner -- Fold patterns and continuous deformation mechanisms of the Central Pennsylvania folded Appalachians / R.P. Nickelsen -- Road log.