edited by A.S. Tooth & J. Spence. edited by A.S. Tooth and J. Spence. edited by J. Rhodes and J. Spence. edited by D. M. Spencer. edited by A. A. Thaer and M. Sernetz. edited by A.S. Strub and P. Ungemach. edited by A. P. French and P. J. Kennedy. edited by A. S. Strub and H. Ehringer. edited by R.W. Frei and J.F. Lawrence. edited by A.S.D. Spiers.