by C. F. Powell...[et al.] by D. W. Appel...[et al.] by M. E. Campbell...[et al.] by A. S. Hornby...[et al.] by D. S. Henzel...[et al.] by P. W. Abeles...[et al.] by A. J. Winkler...[et al.] by J. E. Singley...[et al.] by D. G. King-Hele...[et al.] by F. J. W. Miller...[et al.]