[edited by] Monica Florin-Christensen. edited by P. Thoft-Christensen. edited by Agnete Munch-Petersen. edited by Carl R. Christiansen. edited by John Bu'Lock and Bjorn Kristiansen. edited by Niels Bjorn-Andersen. edited by Sven Erik Jorgensen. edited by John E. Kaufman and Jack F. Christensen. edited by Eva Sivertsen. edited by Norman V. Petersen.