This file has been used in:
Historisches Archiv der Stadt Köln (2015-11-30). Restauratorensprechstunde (in de). facebook.com. Retrieved on 2015-12-21. |
This file has been used in:
Historical Archive of the City of Cologne, Cologne. Restauratorensprechstunde (in de). heyevent.de. Retrieved on 2015-12-21. |