by (Federal Republic of Germany)A.Helbok;by (United Kingdom)F.A.Yates; by (Federal Republic of Germany)A.Levy;by (United Kingdom)A.Dodd; by (Federal Republic of Germany)G.Zumpe;by (United Kingdom)A.B.Tayler; by (Federal Republic of Germany)D.Henry;by (United Kingdom)K.Hoffman; by (Federal Republic of Germany)J.Haydn;by (United Kingdom)B.Bartok; by (Federal Republic of Germany)A.A.Chernov;by (United Kingdom)D.C.Bassett; by (Federal Republic of Germany)B.R.Nag;by (United Kingdom)B.K.Ridley; by (Federal Republic of Germany)B.Zielonka;by (United Kingdom)S.Greenall; by (Federal Republic of Germany)E.Horowitz;by (United Kingdom)R.C.Helt; by (Federal Republic of Germany)H.Zassehaus;by (United Kingdom)A.Baker;