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1.	Climatic variability and flood frequency of the Santa Cruz River, Pima County, Arizona [microform] / by Robert H. Webb and Julio L. Betancourt ; [...] Webb, Robert H.; Betancourt, Julio L.; Pima County (Ariz.). Department of Transporta[...] Tucson, Ariz. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : Books and Open-File Reports Section [distributor, 1990] I 19.76: 90-553 \| Detailed record - Similar records
2.	Climatic variability and flood frequency of the Santa Cruz River, Pima County, Arizona / by Robert H. Webb and Julio L. Betancourt ; prepared in [...] Webb, Robert H.; Betancourt, Julio L. [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Co : For sale by Book and Open-File Report Sales, 1992. GB1399.4.S26 W43 1992 \| Map It \| Detailed record - Similar records
3.	Damming Grand Canyon [electronic resource] : the 1923 USGS Colorado River expedition / Diane E. Boyer and Robert H. Webb ; U.S. Geological Survey[...] Boyer, Diane E.; Webb, Robert H.; Geological Survey (U.S.) Logan, Utah : Utah State University Press, c2007. F788 .B69 2007eb \| View e-resource \| Available Online \| Detailed record - Similar records
4.	Dams and rivers : a primer on the downstream effects of dams / by Michael Collier, Robert H. Webb, and John C. Schmidt. Collier, Michael.; Webb, Robert H.; Schmidt, John C., 1950-; Geological Survey (U.S.) Tucson, Ariz. : U.S. Dept. of the Interior, U.S. Geologicqal Survey ; Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor, 1996] QE75 .C5 no.1126 TD195.D35 \| Map It \| View e-resource \| Available Online \| Detailed record - Similar records
5.	Debris flows from tributaries of the Colorado River, Grand Canyon National Park, Arizona / by Robert H. Webb, Patrick T. Pringle, and Glenn R. Ri[...] Webb, Robert H.; Pringle, Patrick T.; Rink, Glenn R.; United States. Bureau of Reclama[...] Washington : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1989. QE598.5.U6 W43 1989 \| Map It \| Detailed record - Similar records
6.	The Great Cataract [microform] : effects of late Holocene debris flows on Lava Falls Rapid, Grand Canyon National Park, Arizona / by Robert H. We[...] Webb, Robert H.; Geological Survey (U.S.); United States. Bureau of Reclamation. Tucson, Ariz. : U.S. Geological Survey ; [Denver, CO : Branch of Information Services, distributor], 1996. I 19.76: 96-460 \| Detailed record - Similar records
7.	Initiation and frequency of debris flows in Grand Canyon, Arizona [microform] / by Peter G. Griffiths, Robert H. Webb, and Theodore S. Melis ; pr[...] Griffiths, Peter G.; Webb, Robert H.; Melis, Theodore S.; Geological Survey (U.S.); Unit[...] Tucson, Ariz. : U.S. Geological Survey ; [Denver, CO : Branch of Information Services, distributor], 1996. I 19.76: 96-491 \| Detailed record - Similar records
8.	Lava Falls Rapid in Grand Canyon : effects of late Holocene debris flows on the Colorado River / by Robert H. Webb ... [et al.]. Webb, Robert H. Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 1999. QE599.U5 L38 1999 \| Map It \| Detailed record - Similar records
9.	Lee's Ferry [electronic resource] : from Mormon crossing to national park / by p.T. Reilly ; edited by Robert H. Webb ; with contributions by Ric[...] Reilly, P. T. (Plez Talmadge), 1911-1996.; Webb, Robert H.; Quartaroli, Richard D. Logan : Utah State University Press, c1999. F819.L44 R45 1999eb \| View e-resource \| Available Online \| Detailed record - Similar records
10.	Repeat photography [electronic resource] : methods and applications in the natural sciences / edited by Robert H. Webb, Diane E. Boyer, and Raymo[...] Boyer, Diane E.; Turner, R. M. (Raymond M.); Webb, Robert H. Washington, DC : Island Press, c2010. GB405 .R47 2010eb \| View e-resource \| Available Online \| Detailed record - Similar records

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