The International Journal of Falconry 2016 by Robert Zmuda - Issuu
PDF) THE BIRDS OF LAKE ATANASOVSKO Status and Checklist, Second Edition
Petar Iankov - Wildlife Ecologist at the BSPB / BirdLIfe Bulgaria Nature Conservation Centre PODA - Bulgarian Society for the Protection of Birds | LinkedIn
Publications — Batumi Raptor Count
Testabonnement - Der Falke
Publications of the ZFMK staff | Museum Koenig Bonn