Institution: | (1) Ludwigsburg, Germany;(2) Lüftelberg, Germany;(3) Hannover, Germany;(4) Braunschweig, Germany;(5) Prag, Germany;(6) Wiesbaden, Germany;(7) Bonn, Germany;(8) Bautzen, Germany;(9) Altenburg, Germany;(10) Friedrichshafen, Germany;(11) Freudenstadt, Germany;(12) z. Z. Vogelwarte Radolfzell, Germany |