ELECTROPRODUCTION OF PI+ MESONS IN SECOND AND THIRD RESONANCE REGIONS - Evangeli, E; Meaburn, R; Allison, J; Dickinso, B; Ibbotson, M; Lawson, R; Montgome, H; Baxter, D; Foster, F; Hughes, G; Kummer, P; Lyth, D; et al. (1974)