edited by D.G. Jones and D.R. Davies. edited by E.H. Mamdani, B.R. Gaines. edited by Brian E. Davies. edited by D. W. Slocum and O. R. Hughes. edited by R. Davies. edited by Elwin N. Davis. edited by K.E. Davies. edited by I.G. Csizmadia and R. Daudel. edited by Clive Upton and Bethan Davies. edited by D.J. Greenland and M.H.B. Hayes.