by (South Africa)A.Paton;by (United Kingdom)H.B.Garland...et al; by (United Kingdom)G.Evans;by (United Kingdom)J.Hollander...et al; by (United Kingdom)J.Heading;by (United Kingdom)R.A.Horn...et al; by (United States)P.S.Maitland;by (United Kingdom)J.H.S.Blaxter...et al; by (United Kingdom)A.Palmer; (United Kingdom)M.Baudot...et al; by (United Kingdom)A.Maclean;by (United Kingdom)G.Mosback...et al; by (United States)D.Teplitz;by (United Kingdom)I.R.Gekker...et al; by (United Kingdom)A.C.Clarke;by (United Kingdom)A.C.Clarke...et al; by (United Kingdom)J.R.Partington;by (United Kingdom)R.G.W.Anderson...et al; by (United States)J.Avery;by (United Kingdom)A.H.Guth...et al;