Geology of the Grayback mining district, Costilla county, Colorado
By: by Horace B. Patton, Charles E. Smith, G. Montague Bulter, Arthur J. Hoskin.
Contributors: Smith, Charles E.; Butler, Gurdon Montague, 1881-; Hoskin, Arthur Joseph, 1869-
Series: Colorado Geological Survey Bulletin -- no. 2.; Bulletin (Colorado Geological Survey) -- 2.
Publisher: The Smith-Brooks Printing Company, State Printers
Published: 1910
Place of publication: [Denver, Col
Language: eng
Number of pages: 111
Subjects: Geology -- Colorado.
Notes: With Colorado. Geological Survey. Bulletin 1.

Bibliography: p. 98-99.