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Images of Geology -- California -- New Almaden Region -- Maps -- Indexes
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Plan showing base line, primary triangulation, and allotment of a…
| Title |
Plan showing base line, primary triangulation, and allotment of areas for topographic-geology, summer of 1912 |
| Creators |
Drake, Frederick H.; Packard, H.J.; Templeton, E. C. |
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