edited by A. C. Knipe and W. E. Watts. edited by A.C. Knipe & W.E. Watts. Ed. by A. C. Knipe and W. E. Watts. edited by E. C. Subbarao, W. E. Wallace. edited by A. Ciferri and I. M. Ward. edited by A. Singer and E. Galan. edited by G. Hall and J. M. Watt. edited by C. W. White, P. S. Peercy edited by G. C. K. Roberts. edited by C. G. Scott and C. E. Reed.