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By Niki Walker
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By Alberts, Bruce
By Dashner, James
By Rostron, Jack
By J. F. Knott, D. Elliott
By Brown, Frances, Hall, Derek
By Ackers, P., White, W. R., Perkins, J. A., Harrison, A. J. M.
By Clough, Ray
By Fiennes, Ranulp, Ranulph
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By Musgrave, Toby
By Burrough, Professor Peter A.
By Lindon, Mathieu
By Pospisil, Jan
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By Labussière, Olivier, Nadaï, Alain
By Isabel Kuhl
By R. K. Verma
By Alonso Salazar
By Fangueiro, Raul, Rana, Sohel
By J Jobbins
By Craig Donnellan
By Angelaki, Vicky
By Bedient, Phillip B., Huber, Wayne C.
By Warren, Kenneth