edit by D. H. Norrie and G. de Vries edit by J. R. Ewer and G. Latorre edit by M. H. Protter and C. B. Morrey edit by A. J. Thomson and A. V. Martinet edit by A. J. Durelli and V. J. Parks edit by P. L. Sandler and C. L. Stott edit by J. J. O'Keefe and Colleagues edit by C. T. Onions and B. D. H. Miller edit by J. O. Thorne and T. C. Collocott edit by A. W. GOODMAN and J. S. RATTI