edited by D. Parkinson and J. S. Waid. edited by J.D. Collinson and J. Lewin. edited by D. A. Shapton and R. G. Board. edited by A. E. Dixon and J. D. Leslie. edited by J. Carlsson and N.G. Ohlson. edited by C. C. Addison and D. B. Sowerby. edited by C. Carlsson and Y. Kochetkov. edited by D. Stevenson and I.D. Wilson. edited by G.G. Gibson and R. Walker. edited by H.A. David and H.T. David.