Keywords: Burggraff.jpg Pierre Burggraff Lécker U niversitéit PD-art Original upload log page lb wikipedia Burggraff jpg 2008-07-02 13 13 Ernmuhl 165×255× 16967 bytes <nowiki> Sujet Pierre Burggraff Source Lécker U niversitéit Lizenz omaine public</nowiki> 1803 births 1881 deaths Linguists from Luxembourg |