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- Corporate/Agency Authors:
- National Park Service and Interior Dept.
- Publisher:
- National Park Service
- Date:
- [1968.]
- SuDoc number:
- I 29.9/3-2:R 16
- Corporate/Agency Authors:
- National Park Service and Interior Dept.
- Publisher:
- National Park Service
- Date:
- First edition, 1953, revised 1968. [1968.]
- SuDoc number:
- I 29.9/3-2:T 14
- Corporate/Agency Authors:
- National Park Service and Interior Dept.
- Publisher:
- National Park Service
- Date:
- [Revised 1968.] [1968.]
- SuDoc number:
- I 29.21:W 16/2/968
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- [1968.]
- SuDoc number:
- I 19.2:W 29/15
- Corporate/Agency Authors:
- Federal Water Pollution Control Administration and Interior Dept.
- Publisher:
- Federal Water Pollution Control Administration
- Date:
- 1968
- SuDoc number:
- I 67.13:967
- Corporate/Agency Authors:
- Federal Water Pollution Control Administration and Interior Dept.
- Publisher:
- Federal Water Pollution Control Administration
- Date:
- Jan. 1968
- SuDoc number:
- I 67.2:M 58/5
- Corporate/Agency Authors:
- Federal Water Pollution Control Administration and Interior Dept.
- Publisher:
- Federal Water Pollution Control Administration
- Date:
- Jan. 1968
- SuDoc number:
- I 67.2:M 58/4
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- [1968.]
- SuDoc number:
- I 19.53/2:C 12/966/pt.2
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- [1968.]
- SuDoc number:
- I 19.53/2:N 27/966/pt.2
- Corporate/Agency Authors:
- Geological Survey and Interior Dept.
- Publisher:
- Geological Survey
- Date:
- [1968.]
- SuDoc number:
- I 19.42/3:W 27/966-68