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Start Over You searched for: Author Addl Ssim Howell, D. G. ✖ Remove constraint Author Addl Ssim: Howell, D. G. Author/Creator Geological Survey (U.S.) ✖ Remove constraint Author/Creator: Geological Survey (U.S.)Limit your search
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- Geological Survey (U.S.)✖[remove]3
- Howell, D. G.3
- Bird, Kenneth J.1
- Jewel, Eleanore B.1
- Johnsson, Mark J.1