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Ron Wolf: Rocky Mountain Erosion Surface
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Ron Wolf: Harding Hole / Dinosaur National Monument
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Ron Wolf: Colorado River / Arches National Park
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Ron Wolf: "Sand Shadows" in the Dunes
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Ron Wolf: Fault-Propagation Folding along the Mitten Park Fault
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Ron Wolf: Fault-Propagation Folding near the Mitten Park Fault
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Ron Wolf: Black-backed Woodpecker
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Ron Wolf: Utah Crab Spider (Bassaniana utahensis)
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Ron Wolf: Western Black Widow
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Ron Wolf: Western Spiderwort (Tradescantia occidentalis)
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Ron Wolf: Clear Grit Mine and Mill / Leadville
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Ron Wolf: Horned Grebe (Podiceps auritus)
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Ron Wolf: Byssonectria cartilagineum
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Ron Wolf: Horned Lark
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Ron Wolf: Siva Juniper Hairstreak
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Ron Wolf: Colorado Beardtongue (Penstemon auriberbis)
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Ron Wolf: Colorado Beardtongue (Penstemon auriberbis)
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Ron Wolf: American Bison
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Ron Wolf: American Bison
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Daryl L. Hunter - Hole Picture Photo Safaris: Afton-spring-Wyoming-Winter-1
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Daryl L. Hunter - Hole Picture Photo Safaris: Devils Puch Bowl
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Ron Wolf: Ferruginous Hawk
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Ron Wolf: Horned Lark
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Ron Wolf: American Kestrel
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Ron Wolf: Conness Glacier
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Ron Wolf: Colorado Alpine (Erebia callias)
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Ron Wolf: Golden Eagle
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Ron Wolf: Golden Eagle
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Ron Wolf: Prairie Pond in Winter
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Ron Wolf: Bald Eagle