by (Federal Republic of Germany)W.R.Schowalter;by (United States)F.S.Crawford; by (Federal Republic of Germany)A.H.Volkel;by (United States)J.S.Trefil; by (Federal Republic of Germany)M.Schochter;by (United States)R.P.Sperb; by (Federal Republic of Germany)K.L.Mcavaney;by (United States)R.S.Pierce; by (Federal Republic of Germany)W.A.Mozart;by (United States)C.Nielsen; by (Federal Republic of Germany)W.G.Berl;by (United States)D.A.Skoog; by (Federal Republic of Germany)D.V.Dalen;by (United States)W.V.QUINE; by (Federal Republic of Germany)W.Demtroder;by (United States)M.D.Levenson; by (Federal Republic of Germany)Z.M.Nashed;by (United States)M.Schechter; by (Federal Republic of Germany)O.N.Stavroudis;by (United States)H.A.C.S.Van;