1. Requiem for the Santa Cruz : an environmental history of an Arizona river Author/Creator: Webb, Robert H., author Publication/Creation: Tucson, Arizona : University of Arizona Press, [2014] Resource Type: Book Edition: 1st ed. Access & Availability: Loading
2. Requiem for the Santa Cruz : an environmental history of an Arizona river Author/Creator: Webb, Robert H., author Publication/Creation: Tucson : University of Arizona Press, [2014] Resource Type: Book Access & Availability: Loading
3. Lava Falls Rapid in Grand Canyon : effects of late Holocene debris flows on the Colorado River Author/Creator: Webb, Robert H., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 1999 Resource Type: Book Access & Availability: Loading
4. Debris flows from tributaries of the Colorado River, Grand Canyon National Park, Arizona Author/Creator: Webb, Robert H., author Publication/Creation: Washington : Department of the Interior, U.S. Geological Survey, 1989 Resource Type: Book Access & Availability: Loading
5. The response of vegetation to disturbance in Death Valley National Monument, California Author/Creator: Webb, Robert H., author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
6. Preliminary assessment of water quality in the alluvial aquifer of the Puerco River basin, Northeastern Arizona Author/Creator: Webb, Robert H., author Publication/Creation: Tucson, Arizona : U.S. Geological Survey, 1987 Resource Type: Book Access & Availability: Loading