by (United Kingdom)J.S.Rowlinson;by (United Kingdom)B.Widom;by (United States)E.Matijevic; by (United Kingdom)J.S.Rowlinson;by (United Kingdom)F.L.Swinton;by (United States)S.A.Newman; by (United Kingdom)M.Born;by (United Kingdom)E.Wolf;by (United States)A.Ghatak; by (United Kingdom)P.Horowitz;by (United Kingdom)W.Hill;by (United States)R.S.Carson; by (United Kingdom)B.P.Straughan;by (United Kingdom)S.Walker;by (United States)E.G.Steward; by (United Kingdom)J.O.Bird;by (United Kingdom)P.J.Chivers;by (United States)E.U.Condon; by (United Kingdom)V.Hutson;by (United Kingdom)J.S.Pym;by (United States)I.V.Istratescu; by (United Kingdom)L.Cooper;by (United Kingdom)M.W.Cooper;by (United States)B.Bank; by (United Kingdom)M.Begon;by (United Kingdom)M.Mertimer;by (United States)J.Browne; by (United Kingdom)O.J.Bird;by (United Kingdom)C.J.A.May;by (United States)B.Grob;