Preliminary engineering geology of Keystone Canyon
By:  Nelson B. Higgs
Contributors: United States.  Bureau of Land Management
Publisher: U.S. Dept. of the Interior, Bureau of Land Management
Published: 1973
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 18
Subjects: Engineering geology
Notes: "January 1973."

Errata inserted.

Includes bibliographical references.