by PIEJKO,KARL-ERWIN,.DR, BRAESE,HANS-EBERHARD, LINDNER,CHRISTIAN,.DR
Year of Publication 22.06.1989

by THEODOR,.REETZ,MANFRED, PIEJKO,KARL-ERWIN,.DR, OSTAREK,RALPH,.DR
Year of Publication 30.06.1988

by PIEJKO,KARL-ERWIN,DR, BOEMER,BRUNO,DR
Year of Publication 04.02.1988

by EICHENAUER, HERBERT DR, BUNTE, HANS-JUERGEN DR, THIEM, HANS-JUERGEN DR, PIEJKO, KARL-ERWIN DR
Year of Publication 23.07.1997

by PIEJKO,KARL-ERWIN,.DR, OSTAREK,RALPH, T.,. REETZ,MANFRED
Year of Publication 07.08.1986

by PIEJKO,KARL-ERWIN,.DR, BILLINGER,OTTO, LINDNER,CHRISTIAN,.DR, MEIER,LOTHAR,.DR
Year of Publication 13.07.1989

by BRAESE, HANS-EBERHARD, LINDNER, CHRISTIAN. DR., 5000 KOELN, DE, PIEJKO, KARL-ERWIN. DR., 5060 BERGISCH GLADBACH, DE
Year of Publication 17.06.1992

by JOENTGEN WINFRIED DR, STRUVER WERNER DR, GROTH TORSTEN DR, PIEJKO KARL ERWIN DR, KASBAUER JOSEF DR, ALIG BERND DR
Year of Publication 14.08.1996

by SARABI, BAHMAN. DR., 47803 KREFELD, DE, REINKING, KLAUS. DR., 42929 WERMELSKIRCHEN, DE, PIEJKO, KARL-ERWIN. DR., 51467 BERGISCH GLADBACH, DE
Year of Publication 20.06.1996

by PIEJKO, KARL-ERWIN. DR., 5060 BERGISCH GLADBACH, DE, LUETJENS, HOLGER. DR., 5000 KOELN, DE, LINDNER, CHRISTIAN. DR
Year of Publication 21.02.1991

by PIEJKO, KARL-ERWIN. DR., 51467 BERGISCH GLADBACH, DE, EICHENAUER, HERBERT. DR., 41539 DORMAGEN, DE, JANSEN, ULRICH. DR., 41541 DORMAGEN, DE
Year of Publication 26.10.1995

by KOCH, OTTO. DR., 5000 KOELN, DE, PIEJKO, KARL-ERWIN. DR., 5060 BERGISCH GLADBACH, DE, LINDNER, CHRISTIAN. DR
Year of Publication 02.11.1989

by PIEJKO,KARL-ERWIN,.DR, KUBENS,ROLF,.DR, BRAESE,HANS-EBERHARD, OTT,KARL-HEINZ,.DR, LINDNER,CHRISTIAN,.DR
Year of Publication 13.07.1989

by PIEJKO,KARL-ERWIN,.DR, BILLINGER,OTTO, OTT,KARL-HEINZ,.DR, MEIER,LOTHAR,.DR, LINDNER,CHRISTIAN,.DR
Year of Publication 13.07.1989

by PIEJKO,KARL-ERWIN,.DR, WITTMANN,DIETER,.DR, JANSEN,ULRICH,.DR, LINDNER,CHRISTIAN,.DR
Year of Publication 30.03.1989

by BOEMER,BRUNO,.DR, PIEJKO,KARL-ERWIN,.DR, BUYSCH,HANS-JOSEF,.DR, HUELLMANN,MICHAEL,.DR
Year of Publication 26.01.1989

by SCHWARTZ,ULRICH,DR, ARLT,DIETER,DR, GROSSER,RUDOLF,DR, PIEJKO,KARL-ERWIN,DR, BOEMER,BRUNO,DR
Year of Publication 15.09.1988

by LEITZ, EDGAR. DR., 41541 DORMAGEN, DE, KRUEGER, PETER. DR., 51375 LEVERKUSEN, DE, PIEJKO, KARL-ERWIN. DR., 51467 BERGISCH GLADBACH, DE, STARATSCHEK, HARRY., 51069 KOELN, DE, EICHENAUER, HERBERT. DR., 41539 DORMAGEN, DE, WITTMANN, DIETER. DR., 51375 LEVERKUSEN, DE, RAMTHUN, JUERGEN., 51469 BERGISCH GLADBACH, DE
Year of Publication 17.07.1997

by SCHWARTZ,ULRICH,DR, ARLT,DIETER,DR, PIEJKO,KARL-ERWIN,DR, GROSSER,ROLF,DR, BOEMER,BRUNO,DR
Year of Publication 19.03.1987

by KRUEGER, RALF. DR., 5060 BERGISCH GLADBACH, DE, PIEJKO, KARL-ERWIN. DR., 5060 BERGISCH GLADBACH, DE, LUETJENS, HOLGER. DR., 5000 KOELN, DE
Year of Publication 01.04.1993