Now showing items 21-40 of 503
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(National Speleological Society, 1978)
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(National Speleological Society, 1974)
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(Cambridge University Press, 1974-10)
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(2008)
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(IOP Publishing Ltd, 2007-08-03)
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(IOP Publishing Ltd, 2007-06-01)
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(IOP Publishing Ltd, 2007-04-01)
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(IOP Publishing Ltd, 2007-03-21)
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(WILEY-VCH Verlag, 2007-10-15)
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(WILEY-VCH Verlag, 2007-10-19)