Geotechnical engineering of landfills : proceedings of the symposium held at the Nottingham Trent University Department of Civil and Structural Engineering on 24 September 1998 / by Dixon, N., Murray, E. J. (Edward John), Jones, D. R. V., Nottingham Trent University Dept. of Civil and Structural Engineering, Institution of Civil Engineers (Great Britain) East Midlands Geotechnical Groups