01188cam a22002651 4500 gs 07000715 DLC 20260227111306.0 821202s1885 pauad s000 0 eng c gs 07000715 (OCoLC)9010821 U.S. Geol. Survey. Libr. PPAN DLC premarc n-us-pa QE157 .A16 vol. F2 Claypole, E. W. (Edward Waller), 1835-1901. A preliminary report on the palaeontology of Perry county, describing the order and thickness of its formations and its folded and faulted structure. By E.W. Claypole ... Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1885. xxii F2, F2 437, 13 p. front (chart) illus., 2 fold. charts (in pocket) 23 cm. Pennsylvania. Geological survey, 2d. Report of progress F2 On cover: Pennsylvania. Second geological survey, Perry county. Part I. Geology. Paleontology Pennsylvania Perry County. Geology Pennsylvania Perry County. Report of progress (Geological Survey of Pennsylvania), F2. 24622 24622