edit by T. C. Collocott and A. B. Dobson edit by P. M. Whelan and M. J. Hodgson edit by R. E. D. Bishop and D. C. Johnson edit by C. J. Brumfit and K. Johnson edit by C. T. J. Dodson and T. Poston edit by M. H. Protter and C. B. Morrey edit by A. J. Thomson and A. V. Martinet edit by D. H. Norrie and G. de Vries edit by J. O. Thorne and T. C. Collocott edit by M. Stoliar and L. Fonin