- Author: James C Spohrer, Louis E Freund
- Language: English
- Year: 2013
- Author: Dirk Freund (auth.)
- Language: German
- Year: 2013
- Author: R. Isenschmid (auth.) L. Adler J. Bauer W. Caspari U. Ebbecke C. v. Economo H. Freund C. Herbst S. Hirsch A. Hoche H. Hoffmann R. W. Hoffmann R. Isenschmid A. Jodlbauer O. Kestner H. W. Knipping E. Korschelt F. Lenz F. Linke E. Meyer H. H. Meyer W. Nonnenbruch J. K. Parnas E. P. Pick H. Schade J. H. Schultz R. Siebeck R. Stoppel J. Strasburger (eds.)
- Language: German
- Year: 1926
- Author: W. A. Freund (auth.)
- Language: German
- Year: 1913
- Author: Dr. Georg Flatow Dr. Otto Kahn-Freund (auth.)
- Language: German
- Year: 1931
