Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado.  by J.C. Olson and D.C. Hedlund.
Contributors: Hedlund, D.C.
Publisher: U.S.  Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 34
Subjects: Thorium - Colorado
Notes: 11