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| Charlotte, NC, March 2001 |
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| Charlotte, NC, March 2001 |
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| Charlotte, NC, March 2001 |
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| Teotihuacan, Mexico, November 2000 |
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| Charlotte, NC, November 2000 |
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| Charlotte, NC, November 2000. For more
information on that image, see the 2nd edition of "How to Solve It: Modern Heuristics" (Springer, 2004), footnote on page 436. |
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| Ushuaia, Tierra del Fuego, The End of the World, October 2000 |
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| Approaching Cape Horn..., October 2000 |
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| Grand Canion, AZ, July 2000 |
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| Riviera Casino, Las Vegas, NV, July 2000 |
