Mechanical Advantage Series by John Middendorf
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Mechanical Advantage writings and ramblings by John Middendorf
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Mechanical Advantage series by John Middendorf
Mechanical Advantage sidebar
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Mechanical Advantage BigWall Climbing series by John Middendorf
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More big wall ramblings and musings, while procrastinating tools research...
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previously published big wall ramblings
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The development of big wall tools and techniques by John Middendorf IV
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Mechanical Advantage Series by John Middendorf
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Mechanical Advantage series--sidebar
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Mechanical Advantage series by John Middendorf
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Mechanical Advantage Series by John Middendorf
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