00760cam a22002051 4500 gs 31000068 DLC 20260227111335.0 900305s1931 pauab s000 0 eng c gs 31000068 U.S. Geol. Survey Libr./ICU ICU QE157 .A315 557.48 Pennsylvania. Bureau of Topographic and Geologic Survey. The Pennsylvania geological survey; administrative report, by Geo. H. Ashley. Harrisburg, Pa., Dept. of internal affairs, Topographic and geologic survey, 1931. 38 p. illus. (map.) 23 cm. At head of title: Pennsylvania geological survey, fourth series. Ashley, Geo. H. (George Hall), 1866- 26855 26855