edited by Nils H. Axelsen. edited by Niels Bjrn-Andersen. edited by Neil D. Jespersen. edited by A. L. H. Gameson. edited by Barry W. Sauer. edited by C. A. Andersen. edited by L. H. Larsson. edited by Charles H. Flurscheim. edited by A. H. Rose. edited by Nabil H. Farhat.