by (United Kingdom)J.O.Bird;by (United Kingdom)P.J.Chivers;by (United States)E.U.Condon; by (United Kingdom)O.J.Bird;by (United Kingdom)C.J.A.May;by (United States)B.Grob; by (United Kingdom)L.Cooper;by (United Kingdom)M.W.Cooper;by (United States)B.Bank; by (United Kingdom)P.Horowitz;by (United Kingdom)W.Hill;by (United States)R.S.Carson; by (United Kingdom)E.U.Condon;by (United Kingdom)G.H.Shortley;by (United States)B.M.Siirnov; by (United Kingdom)P.Jorgensen;by (United Kingdom)J.Oddershede;by (United States)C.S.Johnson; by (United Kingdom)J.P.Elliott;by (United Kingdom)P.G.Dawber;by (United States)W.B.Atwoos...et al; by (United Kingdom)J.S.Rowlinson;by (United Kingdom)B.Widom;by (United States)E.Matijevic; by (United Kingdom)P.Jones;by (United Kingdom)M.Schmidt;by (United Kingdom)P.Rogers; by (United Kingdom)A.Corney;by (United Kingdom)E.U.Condon;