by (United Kingdom)P.V.Hobbs;by (United States)R.H.McCuen; by (United Kingdom)R.C.Helt;by (United States)R.H.Hammond; by (United Kingdom)P.R.Webb;by (United States)I.Porges; by (United Kingdom)M.C.Irwin;by (United States)R.K.Miller; by (United Kingdom)P.E.Gill;by (United States)M.Z.Nashed; by (United Kingdom)C.W.Jones;by (United States)R.E.F.Mattews; by (United Kingdom)H.Gupta;by (United States)R.K.Guy; by (United Kingdom)K.J.Binns;by (United States)R.L.Gray; by (United Kingdom)P.R.Hesse;by (United States)K.Harris; by (United Kingdom)P.Sykes;by (United States)T.H.Lowry;