1 Walling, D. E. (Ed.) 1982. Recent developments in the explanation and prediction of erosion and sediment yield: proceedings of a symposium held during the First Scientific General Assembly of the International Association of Hydrological Sciences (IAHS), Exeter, UK, 19-30 July 1982. Wallingford, UK: International Association of Hydrological Sciences (IAHS). 430p. (IAHS publication 137)