by (United Kingdom)R.T.Fenner;by (United States)B.Irons; by (United Kingdom)R.C.Denney;by (United States)M.Harwit; by (United Kingdom)R.H.Friba;by (United States)J.Martin; by (United Kingdom)R.J.Leigh;by (United States)R.Larsen; by (United Kingdom)R.Quirk;by (United States)B.Evans; by (United Kingdom)R.N.Hardy;by (United States)K.M.Lyons; by (United Kingdom)R.N.Haward;by (United States)M.Morton; by (United Kingdom)R.A.Smith;by (United States)T.S.Moss; by (United Kingdom)R.C.Evans;by (United States)R.Zallen; by (United Kingdom)J.D.Lenk;by (United States)B.Beizer;