Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1880, in volume 1880, pages 53-55

Created: 2010-06-27, modified: 2017-01-06

Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1880, in volume 1880, pages 77-83

Created: 2011-01-10, modified: 2017-01-06

Published in Sitzungsber. Ges. Naturf. Fr. Berlin, in 1880, in volume 1880, issue 8, pages 111-121

Created: 2010-03-21, modified: 2017-01-06