edited by J. W. S. Hearle and L. W. C. Miles. edited by J. H. L. Henson and A. Whelan. edited by J. D. Williams and A. M. Geddes. edited by E. J. Holborow and W. G. Reeves. edited by A. C. Knipe and W. E. Watts. edited by D. W. Slocum and O. R. Hughes. edited by E. C. Subbarao, W. E. Wallace. edited by J. A. Bondy, U. S. R. Murty. edited by J. L. Harley, R. Scott Russell. edited by H. Ahmed and W. C. Nixon.