Placer examination : principles and practice / by John H. Wells.
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| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Washington :
U.S. Department of Interior, Bureau of Land Management,
1973.
|
| Edition: | Field edition. |
| Series: | Technical bulletin (United States. Bureau of Land Management) ;
4. Technical bulletin ; 4. |
| Subjects: |
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Placer examination : principles and practice /
Published 1989
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