Published in Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, in 1922, in volume 1922, pages 30-36

Created: 2014-01-28, modified: 2014-01-28

Published in Sitzungsberichte der Gesellschaft naturforschender Freunde zu Berlin, in 1922, in volume 1922, issue 3–5, pages 38-53

Created: 2026-05-16, modified: 2026-05-16