OBSERVATION OF D,E AND DELTA-MESONS IN PI-P-INTERACTIONS AT 12 AND 15 GEV-C - Corden, M; Dowell, J; Garvey, J; Jobes, M; Kenyon, I; Mawson, J; Mcmahon, T; Corbett, I; Esterling, R; Lipman, N; Litchfield, P; Sumorok, K; et al. (NUCLEAR PHYSICS B, 1978)