By Steven M. Stanley
By John B Whittow
By Peter Fiennes
By Roy Alexander (Chester College, UK), Andrew C. Millington (University of Leicester
By J.H.C. Gash, etc., C.A. Nobre (Centro de Provisio de Temp e Estudos Climaticos, Brazil), J.M. Roberts (Institute of Hydrology, UK), R.L. Victoria (Centro de Energia Nuclear na Agricultura