Published in Sitzungsberichte Der Gesellschaft Naturforschender Freunde Zu Berlin, in 1912, in volume 1912, pages 1-13

Created: 2017-10-12, modified: 2017-10-12

Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1912, in volume 1912, issue 7, pages 379-384

Created: 2014-08-03, modified: 2014-08-03

Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1912, in volume 1912, issue 7, pages 384-388

Created: 2014-08-03, modified: 2014-08-03