Edited by J. M. Uys and H. L. Bishop. edited by J. R. Norris and M. H. Richmond. edited by S. Bratos and R. M. Pick. edited by E. M. Bridges and D. A. Davidson. edited by J. C. Eccles and J. P. Schad鈋. edited by D. Briggs and M.P. Seah. edited by E. Kaldis and H. J. Scheel. edited by H. Buyse and J. Robert. edited by I. Davies and D.C. Sigee. edited by T. R. Addis and R. M. Muir.