by (United States)A.Melville;by (United States)G.W.Lapidus;by (United Kingdom)Peter Bromhead; by (United States)A.Syoboda;by (United States)D.E.White;by (United Kingdom)G.F.Weston; by (United States)D.H.Norrie;by (United States)G.Vries;by (United Kingdom)P.Tong; by (United States)S.R.Heller;by (United States)G.W.A.Milne;by (United Kingdom)B.J.Millard; by (United States)G.O.Abell;by (United States)B.Singer;by (United Kingdom)M.Buckby; by (United States)R.V.Hogg;by (United States)A.T.Craig;by (United Kingdom)M.Kendall; by (United States)A.E.Roy;by (United States)D.Carke;by (United Kingdom)V.Illingworth; by (United States)D.I.Porat;by (United States)A.Barna;by (United Kingdom)J.P.Hawker; by (United States)P.J.Hilton;by (United States)G.Young;by (United Kingdom)J.C.Jaegor; by (United States)S.McKay;by (United States)L.Rosenthal;by (United Kingdom)S.Miller;