Zeches, Leon

• Communicatio Socialis Bd. 23 Nr. 3 (1990) - Communicatio Socialis 1968-2013
  Berichte - Dokumentation
  Abstract  PDF
• Communicatio Socialis Bd. 31 Nr. 3 (1998) - Communicatio Socialis 1968-2013
  Berichte - Dokumentationen - Chronik
  Abstract  PDF