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- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- May 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- May 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- May 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- May 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- May 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- Apr. 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- Revised Mar. 7, 1961. [1961.]
- SuDoc number:
- I 19.2:P 65/2
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- Mar. 1961
- SuDoc number:
- I 19.49:960
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- Mar. 1961
- SuDoc number:
- I 19.51:(nos.)
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- [February 1961]