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- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- June 18, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- June 12, 1920
- Corporate/Agency Authors:
- Interior Department
- Publisher:
- Interior Department
- Date:
- June 10, 1920
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- June 8, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- June 7, 1920
- Corporate/Agency Authors:
- Interior Department
- Publisher:
- Interior Department
- Date:
- June 5, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- June 5, 1920
- Corporate/Agency Authors:
- Geological Survey and Interior Department
- Publisher:
- Geological Survey
- Date:
- June 5, 1920
- Corporate/Agency Authors:
- Education Bureau and Interior Department
- Publisher:
- Education Bureau
- Date:
- June 2, 1920
- Corporate/Agency Authors:
- Education Bureau and Interior Department
- Publisher:
- Education Bureau
- Date:
- June, 1920