by (Federal Republic of Germany)B.Zielonka;by (United Kingdom)S.Greenall; by (Federal Republic of Germany)A.Helbok;by (United Kingdom)F.A.Yates; by (Federal Republic of Germany)D.Henry;by (United Kingdom)K.Hoffman; by (Federal Republic of Germany)K.Turian;by (United Kingdom)K.Turian; by (Federal Republic of Germany)B.R.Frieden;by (United Kingdom)A.D.Gordon; by (Federal Republic of Germany)B.Freund;by (United Kingdom)N.Wrigley...et al; by (Federal Republic of Germany)B.F.Schutz;by (United Kingdom)V.I.Arnold; by (Federal Republic of Germany)C.Pommerenke;by (United Kingdom)F.Bowman; by (Federal Republic of Germany)A.Levy;by (United Kingdom)A.Dodd; by (Federal Republic of Germany)H.Zassehaus;by (United Kingdom)A.Baker;