First observation of (B)over-bar -> D-(*)rho '(-), rho '(-)->omega pi(-) by Alexander, J, Bebek, C, Berger, B, Berkelman, K, Blanc, F, Boisvert, V, Cassel, D, Drell, P, Duboseq, J, Ecklund, K, Ehrlich, R, Gaidarev, P, Gibbons, L, Gittelman, B, Gray, S, Hartill, D, Heltsley, B, Hsu, L, Jones, C, Kandaswamy, J, Kreinick, D, Lohner, M, Magerkurth, A, Meyer, T, Mistry, N