Guide to the geology of the Oregon area, Ogle County
By: David L. Reinertsen
Contributors: Illinois State Geological Survey
Series: Geological science field trip -- 1990C; Field trip guidebook (Illinois State Geological Survey) -- 1990C.; Geological Science field trip (Illinois State Geological Survey) -- 1990C.
Publisher: Illinois State Geological Survey
Published: 1990
Place of publication: Champaign, IL
Language: eng
Number of pages: 47
Subjects: Geology
Other titles: Oregon area geology guide.; Guide leaflet.
Notes: "September 29, 1990."

Series popularly known as guide leaflet or field trip guidebook.

Includes bibliographical references (p. 46-47).