edited by David J. Williams and Paul Rogers. edited by David R. Williams edited by David A. Winter and Nick Reed. edited by S. William Pelletier. edited by David F. Paulson. edited by David S. Kliger. edited by J.S. Williams, J.M. Poate. edited by J. D. Williams and A. M. Geddes. edited by David M. Waterhouse. edited by M. William Ranney.