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Climbing & Skiing
Climbing & Skiing
Colorado Skiing
Western Canada Backcountry Skiing
LaSal Range Skiing
Utah Canyon Country
Western Canada Climbing
Gore Range Rock Climbing
Rock Climbing
Colorado Hiking
Peak List
Mathematics
Mathematics
Square-Wheel Bike
Favorite Problems + Puzzles
Problem of the Week
Books and Papers
VisualDSolve
The SIAM 100-Digit Challenge
Best Math Joke of All Time
Invisible Handshake by Helaman Ferguson
Flowers & Mushrooms
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Resources
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Public Files
Knee Replacement Report
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Useful Links
Starry Solomon’s seal, or Solomon’s Plume;
Maianthemum stellatum
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