edited by Abraham M. George and Ian H. Giddy edited by Abraham Jacob Greenstine and Ryan J. Johnson. edited by Babu George and John Rogers. edited by Graham Jones and Jon Roffe. edited by Graham Ellard and Jonathan Harvey edited by Robert M. Smith, George F. Aker and J. R. Kidd edited by Frank Abrahams and Paul D. Head. edited by Graham McGregor, R. S. White edited by Julian Preece and Nick Hodgin. edited by Richard Dalby and Brian J. Frost