Correlation papers ; Cambrian
By: by Charles Doolittle Walcott.
Series: U.S. Geological survey. Bulletin; no. 81
Publisher: Govt. Print. Off.
Published: 1891
Place of publication: Washington
Language: eng
Number of pages: 447
Subjects: Geology, Stratigraphic -- Cambrian.; Geology -- United States.
Notes: Literature : p. 19-48.