edited by E. Jager and J. C. Hunziker. edited by W. Jager, J. Moser, R. Remmert. edited by E. Gelenbe, D. Potier. edited by J.J. Becker and J.C. Bonner. edited by E. S. E. Hafez. edited by G. Ganetsos, P.E. Barker. edited by John J. H. Miller. edited by E. L. Grove, A. J. Perkins. edited by G. G. Birch and K. J. Parker. edited by Charles W. Parker.