(United States)R.R.Yager;by (United States)M.M.Gupta; by (United States)B.G.Batchelor;by (United States)M.M.Gupta; (United States)W.H.Beyer;by (United States)D.M.Burton; (United States)R.L.Grob;by (United States)F.D.Snell; (United States)T.R.Horton;by (United States)A.M.Kinght; (United States)J.Stein;by (United States)P.M.Roget; (United States)M.T.Bower;by (United States)J.R.Conder; (United States)M.V.Twigg; (United States)M.J.Mays; (United States)R.E.Machol;by (United States)J.Diamond; (United States)R.J.Howarth;by (United States)J.B.Maynard;