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By Michael Harvey (Interactional Coaching, London, UK)
By Bronwyn Hayward
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By Andrew Dobson (Keele University, UK)
By Crane, Andrew, Matten, Dirk
By E. Gene Frankland, Donald Schoonmaker
By Gwyn Prins, Robert Stamp
By Thomas L. Friedman
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By Ernst Ulrich von Weizsacker, Oran R. Young (University of California Santa Barbara, USA), Matthias Finger, Marianne Beisheim
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By Berkeley Hill (Imperial College, University of London, UK)
By Bjorn Lomborg (Copenhagen Business School)
By Peter North
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By Maxwell Irvine (formerly Honorary Professor of Physics, Manchester University)
By Jeremy Lent
By Parkinson, J., Mark, O., Jonathan
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