by SPIETSCHKA, ERNST, TROSTER, HELMUT
Year of Publication 09.04.1986

by SPIETSCHKA, ERNST, TROSTER, HELMUT
Year of Publication 09.04.1986

by SPIETSCHKA, ERNST, TROSTER, HELMUT
Year of Publication 09.04.1986

by SPIETSCHKA, ERNST, TROSTER, HELMUT
Year of Publication 24.10.1984

by Tröster, Helmut
Published in Dyes and pigments (1983)

by SPIETSCHKA, ERNST, TROSTER, HELMUT
Year of Publication 11.11.1981

by SPIETSCHKA, ERNST, TROSTER, HELMUT
Year of Publication 09.09.1981

by SIEBER, ALEXANDER, TROSTER, HELMUT, MACHOLDT, HANS-TOBIAS
Year of Publication 05.08.1987

by SPIETSCHKA, ERNST, TROSTER, HELMUT, WIEDEMANN, WOLFGANG
Year of Publication 04.02.1987

by BAUR, GUNTER, TROSTER, HELMUT, KELKER, HANS, DR
Year of Publication 17.10.1979

by FUCHS. DR., OTTO, 6000 FRANKFURT, DE, TROESTER. DR., HELMUT, 6241 SCHNEIDHAIN, DE
Year of Publication 04.02.1982

by FUCHS. DR., OTTO, 6000 FRANKFURT, DE, TROESTER. DR., HELMUT, 6241 SCHNEIDHAIN, DE
Year of Publication 07.05.1981