by (United States)F.E.Clese;by (United Kingdom)P.D.B.Collins; by (United States)N.Eldredge;by (United Kingdom)J.D.Collinson; by (United States)H.Cohn;by (United Kingdom)R.B.Cooper; by (United States)L.R.Foulds;by (United Kingdom)P.E.Gill; by (United States)E.F.Kloin;by (United Kingdom)S.J.Molinsky; by (United States)F.J.Tipler;by (United Kingdom)S.W.Hawking; by (United States)A.Fine;by (United Kingdom)P.J.Fleming; by (United States)F.Treves;by (United Kingdom)J.F.Adams; by (United States)J.Lowe;by (United Kingdom)P.Williams; by (United States)N.wirth;by (United Kingdom)R.B.Coats;