Santa Catalina Mountains
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- Forest Fire Histories of La Frontera: Fire-Scar Reconstructions of Fire Regimes in the United States/Mexico Borderlands
- On the Pollen Harvest Mellifera L.) Near Tucson, Arizona
- The Decline of Bighorn Sheep in the Santa Catalina Mountains, Arizona
- Sonorensis 2013
- Rec Report.Ind
- From the Desert Floor in the Heart of Arizona's Santa Catalina Mountains Rises Mount Lemmon, a Climb of Epic Proportions
- Summer Birds of the Rincon Mountains, Saguaro National Monument, Arizona
- Introduction to the Arizona Sky Island Arthropod Project (ASAP): Systematics, Biogeography, Ecology, and Population Genetics of Arthropods of the Madrean Sky Islands
- Muriel Upham Photo Collection
- Department of the Interior U.S. Geological Survey
- Pima County's Withdrawal from Its Past
- Sbhc Hike Database 06-01-10
- Status, Distribution, Habitat, and Stressors of the Sonoran Talussnail
- Great Hoodoo Hunts
- Friends of Sabino Canyon Fall 2014
- New and Revised I Stratigraphic Names in the Santa Rita Mountains of Southeastern Arizona by HARALD DREWES CONTRIBUTIONS to STRATIGRAPHY
- Walnut Canyon National Monument Geologic Resource Evaluation Report
- The Role of Magmatism in the Catalina Metamorphic Core Complex, Arizona: Insights from Integrated Thermochronology, Gravity and Aeromagnetic Data