Soil Erosion at Multiple Scales. Principles and Methods for Assessing Causes and Impacts: F.W.T. Penning de Vries, F. Agus, J. Kerr (Eds.); CABI Publishing, Wallingford, Oxon, UK. in association with the International Board of Soil Research and Management (IBSRAM), 1998, 390 pages, hardbound, ISBN 0 85199 290 0, $60.00 uri icon