Title: Geology of the McCalls Ferry-Quarryville district, Pennsylvania
First published: 1929
Subjects: Geology, Geology, Stratigraphic, Igneous Rocks, Metamorphism (Geology), Physical geography, Rocks, Igneous, Rocks, Sedimentary, Sedimentary Rocks, Stratigraphic Geology, Stratigraphic correlation
Places: Pennsylvania
Time periods: Paleozoic, Precambrian