by (United Kingdom)D.Barton;by (United States)A.R.Surrey; by (United Kingdom)R.Battion;by (United States)A.P.Schaap; by (United Kingdom)A.Sharp;by (United States)A.L.Sonka; by (United Kingdom)D.Byrne;by (United States)D.Daiker; by (United Kingdom)M.Kenyon;by (United States)A.H.Live; by (United Kingdom)D.Kramer;by (United States)A.I.Miller; by (United Kingdom)W.E.Parry;by (United States)A.O.Barut; by (United Kingdom)J.Maclean;by (United States)A.A.Norton; by (United Kingdom)C.Oalley;by (United States)A.M.Portis; by (United Kingdom)D.M.Bishop;by (United States)J.P.Lowe;