Neuer Beitrag zur Kenntnis der Wasserimmen

Published in 1910 in Annales de Biologie Lacustre, volume 4, on pages 187-193
Authors: W A Schulz

Suesswasser-Hymenopteren aus dem See von Overmeire

Published in 1910 in Annales De Biologie Lacustre, volume 4, on pages 194-210
Authors: