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Climbing & Skiing
Climbing & Skiing
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Western Canada Backcountry Skiing
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Utah Canyon Country
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Mathematics
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VisualDSolve
The SIAM 100-Digit Challenge
Best Math Joke of All Time
Invisible Handshake by Helaman Ferguson
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Knee Replacement Report
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Useful Links
This site is useful for geology:
https://macrostrat.org
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