edited by V. F. Zackay and H. I. Aaronson. edited by W. J. B. Chater and J. L. Harrison. edited by E. M. Bridges and D. A. Davidson. edited by G. L. Weissler and R. W. Carlson. edited by F.L. LaQue and H.R. Copson. edited by R. Mackay and A. J. Mountford. edited by A. H. Rose and J. F. Wilkinson. edited by M. Szycher and W.J. Robinson. edited by J.R. Freney and J.R. Simpson. edited by R.A. Cairns and J.J. Sanderson.