The U.S. Geological Survey
Subtitle: making a world of difference
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 2001
Place of publication: [Reston, Va.?]
Language: eng
Subjects: Geological Survey (U.S.)
Other titles: Making a world of difference
Notes: Shipping list no.: 2001-0074-P

Diagram of geologic time on verso