Evans, James George, 1938- Geologic field-trip guide to Steens Mountain Loop Road, Harney County, Oregon / by James G. Evans and Thresa M. Geisler. - 2001. - viii, 15 p. : ill. (some col.), col. map. ; 28 cm. - U.S. Geological Survey bulletin ; 2183 . One folded col. map in pocket. Includes bibliographical references (p. 15). LCCN: 2001040123 Subjects--Topical Terms: Geology--Oregon--Steens Mountain Region--Guidebooks. Subjects--Geographic Terms: Steens Mountain Region (Or.)--Guidebooks. Subjects--Index Terms: გელოგია ორეგონის შტატი (აშშ) - გეოლოგია მეგზურები LC Class. No.: QE75 QE156.S74 / .B9 no. 2183 Dewey Class. No.: 557.95/95 Universal Decimal Class. No.: 55(73)(036)