edit by I. M. Singer and J. A. Thorpe edit by J. R. Ewer and G. Latorre edit by M. H. Protter and C. B. Morrey edit by H. W. Fowler and F. G. Fowler edit by P. L. Sandler and C. L. Stott edit by W. S. Fowler and J. Pidcock edit by W. S. Fowler and Norman Coe edit by A. J. Durelli and V. J. Parks edit by A. J. WYATT and S. E. GOGGIN edit by G. B. Dantzing and B. C. Eaves