http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geologic map of the Pine Grove quadrangle, Schuylkill, Lebanon, and Berks Counties, Pennsylvania
Pine Grove quadrangle, Schuykill Lebanon,and Berks Counties, Pennsylvania, geologic map
by Gordon H. Wood, Jr. and Thomas M. Kehn.
Relief shown by contours and spot heights.
Includes index map and 2 col. cross sections.