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Author/Creator
- Geological Survey (U.S.)7
- Ruhl, J. F.4
- United States. Environmental Protection Agency4
- Wolf, R. J.4
- Adolphson, D. G. (Donald G.), 1928-3
- Chen, Hsiu-Hsiung, 1937-1
- Lindskov, K. L.1
- McCormack, H. F.1
- Mills, L. R.1
- Pettijohn, Robert A.1
- Stewart, J. W. (Joe W.), 1918-1
- Stolp, B. J.1
- Tampa (Fla.)1
- United States. Bureau of Land Management1