Reports and maps of the Geological Survey released only in the open files, 1968
By: by Betsy A. Weld, Margaret S. Griffin, and George W. Brett
Contributors: Griffin, Margaret S.; Brett, George W.; Geological Survey (U.S.)
Series: Geological Survey circular -- 568; Circular (Geological Survey (U.S.)) -- 568.
Publisher: U.S. Department of the Interior, Geological Survey
Published: 1969
Place of publication: Washington
Language: eng
Number of pages: 24
Subjects: Bibliography; Maps; Geological Survey (U.S.)
Notes: Includes index.