by (United States)Irving M.Copi;by (United Kingdom)J.Finnis; by (United States)J.Milton;by (United Kingdom)J.Ford; by (United States)M.Alexander;by (United Kingdom)J.Donne; by (United States)Irving M.Copi;by (United States)Thomas G.Sticht; by (United States)J.Kestin;by (United Kingdom)J.F.Lee; by (United States)J.S.Kenyon;by (United Kingdom)J.W.Lewis; by (United States)H.O.Stoarns;by (United Kingdom)J.Simpkins; by (United States)Ivan Flores;by (United Kingdom)J.D.Ullman; by (United States)C.O.S.Mawson;by (United Kingdom)J.Paxton; by (United States)A.Colver;by (United Kingdom)J.Conrad;