[by] D. D. Jones [and] R. A. Hilbourne. by H. C. Town and R. Colebourne. by S. R. Cockett and K. A. Hilton. by D.A.D. Montgomery and R.B. Welbourn. by G. B. Ansell and J. N. Hawthorne. by D. C. Miles [and] J. H. Briston. by D.T.E. Hunt and A.L. Wilson. [by] J. R. A. Beale, E. T. Emms [and] R. A. Hilbourne. by D. F. Spooner and W. H. Grinsted. by R. D. Russell and R. M. Farquhar.