Georg Ruge an Ernst Haeckel, Amsterdam, 23. September 1890
Professor Häckel bei Geheimrath Gegenbaur
Swammerdam fest 15 Oktober
Ruge
Letter metadata
Genre
Dating
23.09.1890
Place of origin
Country of origin
Destination
Heidelberg
Possessing institution
EHA Jena
Signature
A 53555
ID
53555