Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1883, in volume 1883, pages 1-2

Created: 2013-04-19, modified: 2013-04-19

Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1883, in volume 1883, pages 128-132

Created: 2011-01-10, modified: 2011-06-21

Published in Sitzungsber. Ges. naturf. Freunde Berlin, in 1883, in volume 1883, issue 2, pages 27-29

Created: 2010-03-21, modified: 2011-06-21