Riddle folio, Oregon
By: by J. S. Diller and G. F. Kay
Edition: Library ed.
Series: U. S. Geological Survey. Geologic atlas of the United States -- no. 218; Geologic atlas of the United States -- fol. 218
Publisher: U. S. Geological Survey
Published: 1924
Place of publication: Washington, D. C
Language: eng
Subjects: Geology; Maps
Notes: At head of title: Department of the Interior.

Cover title.