by HEIN,FRIEDRICH,DR, MUELLNER,HUBERT,DR, UHLMANN,EUGEN,DR, WILLI,JANSEN,HANS
Year of Publication 07.04.1988

by PUEHLER, ALFRED, DR, ARNOLD, WALTER, STRAUCH, ECKHARD, DONN, GUENTER, WENGENMAYER, FRIEDRICH, ALIJAH, RENATE, WOHLLEBEN, WOLFGANG, ECKES, PETER, HEIN, FRIEDRICH, UHLMANN, EUGEN
Year of Publication 15.03.1993

by HEIN,FRIEDRICH,DR, PREIBISCH,GERALD,DR, UHLMANN,EUGEN,DR, LINDENMAIER,WERNER,DR, RAGG,HERMANN,DR
Year of Publication 29.09.1988

by THABO VINCENT MONKHE, DESMOND AUSTIN YOUNG, RUDOLPH JOHANNES PRETORIUS, FRANCHOAN SMIT, FRIEDRICH WILHELM HEIN KRUGER
Year of Publication 25.10.1999

by YOUNG, DESMOND, AUSTIN, PRETORIUS, RUDOLPH, JOHANNES, SMIT, FRANCHOAN, KRUGER, FRIEDRICH, WILHELM, HEIN, MONKHE, THABO, VINCENT
Year of Publication 14.10.1999

by FRIEDRICH K. FRENKLER, HEIN WIELAND ET ANDREAS HAUG
Year of Publication 05.02.1993

by FRIEDRICH K. FRENKLER, HEIN WIELAND ET ANDREAS HAUG
Year of Publication 25.04.1986