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| Title |
The U. S. Geological Survey in the early 1900's - Reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins
|
|---|---|
| Published by |
US Geological Survey, January 1997
|
| DOI | 10.3133/ofr97267a |
| Authors |
Hewett, Donnel Foster, Knopf, Adolph, Calkins, Frank C. |