Published in Sitzungsberichte der Gesselschaft naturforschender Freunde zu Berlin. Berlin, in 1904, in volume 1904, pages 14-17

Created: 2011-06-03, modified: 2023-02-16

Published in Sitzungsberichte der Gesselschaft naturforschender Freunde zu Berlin. Berlin, in 1904, in volume 1904, pages 155-164

Created: 2011-06-03, modified: 2023-02-16

Published in Sitzungsberichte Gesellschaft naturforschenden Freunde Berlin, in 1904, in volume 1904, issue 5, pages 71-83

Created: 2013-04-18, modified: 2013-04-18