01208cam a22002891 4500 gs 41000115 DLC 20260227111346.0 780218m19409999vauabcf b 000 0 eng c gs 41000115 (OCoLC)3649241 U.S. Geol. survey. Library CCC OCoLC WaChenE DLC premarc QE173 .A2 no. 52 Butts, Charles, 1863-1946. Geology of the Appalachian valley in Virginia, by Charles Butts ... Prepared in cooperation with the United States Geological survey. University, Va., 1940- v. illus. (incl. maps) plates (part fold.) port. 23 cm. Virginia. Geological survey. Bulletin 52 At head of title: Commonwealth of Virginia. Virginia Conservation Commission. Virginia Geological survey, Arthur Bevan, state geologist. Bibliographical foot-notes. pt. 1. Geologic text and illustrations.--pt. II. Fossil plates and explanations. Geology Virginia. Geological Survey (U.S.) Virginia Geological Survey. Bulletin (Virginia Geological Survey) 52, 27725 27725