"Prepared in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund Board."
Title from title screen (viewed July 23, 2014).
Bibliography
Includes bibliographical references (pages 417-420) and index.
Reproduction
Electronic reproduction. Denton, Texas : University of North Texas, 2015 . Electronic reproduction from print master produced by University of North Texas.
System Details
Master and use copy. Digital master created according to Technical Guidelines for Digitizing Archival Materials for Electronic Access. U.S. National Archives and Records Administration, 2004. http://www.archives.gov/preservation/technical/guidelines.html TxDN
Processing Action
digitized 2015 University of North Texas committed to preserve pda TXdn.010
