Geology of the conterminous United States at 1:2,500,000 scale
Subtitle: A digital representation of the 1974 P.B. King and H.M. Beikman map (Digital data series)
Edition: Release 2, 1998 edition
Publisher: For sale by USGS Map Distribution
Published: 1998
Language: eng
Format: Unknown Binding
ISBN-13: 9780607914597