edited by D. Rickwood and B.D. Hames. edited by D. Rickwood, B.D. Hames. edited by B. Greenwood and R.A. Davis, Jr. edited by I.M. MacLeod and A.D. Heher. edited by T.N. Clifford and I.G. Gass. edited by V.H. Heywood and D.M. Moore. edited by A.K. Sood and A.H. Qureshi. edited by D.J. Greenland and M.H.B. Hayes. edited by I. M. Barbour and A. T. Davies. edited by T. Galliard and E.I. Mercer.