Placer examination; principles and practice
By: by John H. Wells
Edition: Field ed., May 1973.
Series: United States. Bureau of Land Management. Technical bulletin -- 4; Technical bulletin (United States. Bureau of Land Management) -- 4.
Publisher: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.]
Published: 1973
Place of publication: Washington]
Language: eng
Number of pages: 209
Subjects: Placer deposits
Notes: Includes bibliographical references.