A MEASUREMENT OF THE TAU-LIFETIME by Brauschweig, W, Gerhards, R, Kirschfink, F, Martyn, H, Bock, B, Fischer, H, Hartmann, H, Hartmann, J, Hilger, E, Jocksch, A, Wedemeyer, R, Foster, B, Martin, A, Sephton, A, Bernardi, E, Chwastowski, J, Eskreys, A, Gather, K, Genser, K, Hultschig, H, Joos, P, Kowalski, H, Ladage, A, Lohr, B, Luke, D