by (United Kingdom)G.F.Weston;by (United Kingdom)R.Bittleston;by (United States)H.P.Haiduk; by (United Kingdom)R.Gower;by (United Kingdom)M.Pearson;by (United States)A.S.Horning; by (United Kingdom)R.M.Whittle;by (United Kingdom)J.Yarwood;by (United States)R.P.Bauman; by (United Kingdom)P.Horowitz;by (United Kingdom)W.Hill;by (United States)R.S.Carson; by (United Kingdom)L.P.Bayvel;by (United Kingdom)A.R.Jones;by (United States)W.B.Cheston; by (United Kingdom)K.Hoffman;by (United Kingdom)R.Lunze;by (United States)W.L.Johnson; by (United Kingdom)O.J.Bird;by (United Kingdom)C.J.A.May;by (United States)B.Grob; by (United Kingdom)R.W.P.King;by (United Kingdom)G.S.Smith; (United States)Instute of; by (United Kingdom)G.J.Schiffhorst;by (United States)L.P.Lim; by (United Kingdom)G.K.Woodgate;by (United States)E.L.Grove;