Observations of environmental change in Grand Canyon, ArizonaWebb, Robert H. · First published 2002Open the Tome
Climatic variability and flood frequency of the Santa Cruz River, Pima County, ArizonaWebb, Robert H. · First published 1990 · Latest edition 1992Open the Tome
Historic channel change of Kanab Creek, southern Utah and northern Arizona, 1991Webb, Robert H. · First published 1992Open the Tome
The response of vegetation to disturbance in Death Valley National Monument, CaliforniaWebb, Robert H. · First published 1988Open the Tome
Debris flows from tributaries of the Colorado River, Grand Canyon National Park, ArizonaRobert H Webb · First published 1987Open the Tome
Distribution of radionuclide and trace-elements in ground water, grasses, and surficial sediments associated with the alluvial aquifer along the Puerco River, northeastern ArizonaWebb, Robert H. · First published 1987Open the Tome
Preliminary assessment of water quality in the alluvial aquifer of the Puerco River basin, Northeastern ArizonaWebb, Robert H. · First published 1987Open the Tome
