by UMBACH,WILFRIED,.DR
Year of Publication 13.01.1972

by UMBACH, WILFRIED. DR., 4018 LANGENFELD, STEIN, WERNER. DR., 4006 ERKRATH-UNTERBACH
Year of Publication 06.02.1975

by STEIN,WERNER,.DR, UMBACH,WILFRIED,.DR, MEHREN,RAINER,.DR
Year of Publication 08.06.1972

by STEIN,WERNER,.DR, STRUVE,ALFRED,.DR, UMBACH,WILFRIED,.DR
Year of Publication 10.02.1972

by MEHREN, RAINER- . DR., 4040 NEUSS, UMBACH, WILFRIED. DR., 4018 LANGENFELD, STEIN, WERNER. DR., 4006 ERKRATH
Year of Publication 21.02.1980

by SUNG, ERIC. DR., 4000 DUESSELDORF, UMBACH, WILFRIED. DR., 4018 LANGENFELD, BAUMANN, HORST. DR., 5672 LEICHLINGEN
Year of Publication 29.03.1979

by LEPPER, HERBERT. DR., 5000 KOELN, UMBACH, WILFRIED. DR., 4018 LANGENFELD, STEIN, WERNER- . DR., 4006 ERKRATH-UNTERBACH
Year of Publication 30.10.1975

by GLOXHUBER, CHRISTIAN.MED., 5657 HAAN, UMBACH, WILFRIED- . DR., 4018 LANGENFELD, OSBERGHAUS, RAINER. DR., 4000 DUESSELDORF, BRAIG, SIEGFRIED. DR., 4010 HILDEN
Year of Publication 14.08.1975

by STEIN, WERNER- . DR., 4006 ERKRATH, UMBACH, WILFRIED. DR., 4018 LANGENFELD, WEICHBRODT, MARIA. DR., 5000 KOELN
Year of Publication 19.06.1975

by UMBACH, WILFRIED. DR., 4018 LANGENFELD, WEICHBRODT, MARIA. DR., 5000 KOELN, STEIN, WERNER. DR., 4006 ERKRATH
Year of Publication 31.10.1974

by UMBACH, WILFRIED. DR., 4018 LANGENFELD, DE, OSBERGHAUS, RAINER. DR., 4000 DUESSELDORF, DE, GLOXHUBER, CHRISTIAN.MED., 5657 HAAN, DE, BRAIG, SIEGFRIED. DR., 4010 HILDEN, DE
Year of Publication 26.07.1984

by UMBACH, WILFRIED. DR., 4018 LANGENFELD, DE, MEHREN, RAINER. DR., 4040 NEUSS, DE, STEIN, WERNER. DR., 4006 ERKRATH-UNTERBACH, DE
Year of Publication 19.05.1982

by UMBACH, WILFRIED. DR., 4018 LANGENFELD, DE, STEIN, WERNER. DR., 4006 ERKRATH, DE, MEHREN, RAINER. DR., 4040 NEUSS, DE
Year of Publication 13.05.1982

by UMBACH, WILFRIED. DR., 4018 LANGENFELD, DE, STEIN, WERNER. DR., 4006 ERKRATH, DE, MEHREN, RAINER. DR., 4040 NEUSS, DE
Year of Publication 28.01.1982

by MEHREN, RAINER- . DR., 4040 NEUSS, UMBACH, WILFRIED. DR., 4018 LANGENFELD, STEIN, WERNER. DR., 4006 ERKRATH-UNTERBACH, GOETTE, ERNST. DR., 4030 RATINGEN-TIEFENBROICH
Year of Publication 15.02.1979

by MEHREN, RAINER- . DR., 4040 NEUSS, UMBACH, WILFRIED. DR., 4018 LANGENFELD, STEIN, WERNER. DR., 4006 ERKRATH-UNTERBACH, GOETTE, ERNST. DR., 4030 RATINGEN-TIEFENBROICH
Year of Publication 15.06.1978

by STEIN,WERNER,.DR, UMBACH,WILFRIED,.DR
Year of Publication 11.10.1973

by STEIN,WERNER,.DR, UMBACH,WILFRIED,.DR
Year of Publication 02.03.1972

by STEIN,WERNER,.DR, UMBACH,WILFRIED,.DR, MEHREN,RAINER,.DR
Year of Publication 28.10.1971

by STEIN,WERNER,.DR, UMBACH,WILFRIED,.DR, MEHREN,RAINER,.DR
Year of Publication 28.10.1971