(United States)H.J.Butcher;by (United Kingdom)E.Dejnozka; (United States)W.T.Rcich;by (United Kingdom)R.G.Ham; (United States)J.M.Burgers;by (United Kingdom)D.E.Edmunds; (United States)V.Grant;by (United Kingdom)D.Lewis; (United States)B.S.Wynar;by (United Kingdom)R.L.Purdy; (United States)C.Laird;by (United Kingdom)R.Dhillon; (United States)J.Daintith;by (United Kingdom)H.J.Gray; (United States)M.Nagata;by (United Kingdom)R.A.Gorman; (United States)P.Davies;by (United Kingdom)A.Evison; (United States)P.E.Glasor;by (United Kingdom)J.E.Allen;