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- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Sept. 2, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Sept. 1, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 31, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 30, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 27, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 13, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 13, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 12, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 12, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- Aug. 11, 1920