Reconnaissance investigations of ancient gold mines in the southern part of the Wadi Bidah District, Jabal Ibrahim and Al Aqiq quadrangles, Kingdom of Saudi Arabia
By: by Ronald G. Worl and Charles W. Smith ; U.S. Department of the Interior, Geological Survey
Contributors: Smith, C. W. 1920-; Geological Survey (U.S.)
Series: Open-file report -- 82-789; Open-file report (Geological Survey (U.S.)) -- 82-789
Publisher: The Survey
Published: 1982
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Gold mines and mining -- Saudi Arabia
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1982?]. 1 microfiche ; 11 x 15 cm

Bibliography: p. 21