by OBST,SIEGFRIED
Year of Publication 16.07.1981

by OBST, SIEGFRIED., 1000 BERLIN, DE, DELMAS, REINHARD
Year of Publication 10.05.1984

by INGEBORG ENGEL, HARTMUT WOZNIAK, GERHARD FRIES, JOACHIM WINKLER, SIEGHARD LANG, SIEGFRIED OBST, DORTHE CREUZBURG, MANFRED GROSS, MANFRED KLEPEL, HELGA AUERSWALD
Year of Publication 08.04.1987

by MANFRED GROSS, MANFRED KLEPEL, INGEBORG ENGEL, GERHARD FRIES, HELGA AUERSWALD, DORTHE CREUZBURG, SIEGHARD LANG, SIEGFRIED OBST, JOACHIM WINKLER ET HARTMUT WOZNIAK
Year of Publication 27.02.1987

by OBST,SIEGFRIED, KLEPEL,MANFRED,.DR, WOZNIAK,HARTMUT,-AGR..DR, FRIES,GERHARD,.DR, CREUZBURG,DOERTHE,-BIOL.DR, WINKLER,JOACHIM,DR, ENGEL,INGEBORG,-GAERTN, LANG,SIEGHARD,-LANDW.DR, GROSS,MANFRED,.DR, AUERSWALD,HELGA,-BIOL.DR
Year of Publication 23.07.1987

by WOZNIAK,HARTMUT,DD, KLEPEL,MANFRED,DD, ENGEL,INGEBORG,DD, CREUZBURG,DOERTHE,DD, AUERSWALD,HELGA,DD, LANG,SIEGHARD,DD, OBST,SIEGFRIED,DD, WINKLER,JOACHIM,DD, GROSS,MANFRED,DD, FRIES,GERHARD,DD
Year of Publication 28.10.1987

by WOZNIAK,HARTMUT,DD, KLEPEL,MANFRED,DD, ENGEL,INGEBORG,DD, CREUZBURG,DOERTHE,DD, AUERSWALD,HELGA,DD, LANG,SIEGHARD,DD, OBST,SIEGFRIED,DD, WINKLER,JOACHIM,DD, GROSS,MANFRED,DD, FRIES,GERHARD,DD
Year of Publication 29.10.1986