edited by D. W. Slocum and O. R. Hughes. edited by B. Henderson and A. E. Hughes. edited by J. D. Williams and A. M. Geddes. edited by E. J. Holborow and W. G. Reeves. edited by D. L. Colton and R. P. Gilbert. edited by D. H. Hey and D. I. John. edited by D. Klamt and R. Lauber. edited by D.G. Jones and D.R. Davies. edited by D. G. Ashwell and R. H. Gallagher. edited by John O. Bickel, T. R. Kuesel.