Peregrine falcon populations : status and perspectives in the 21st century /
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Mizera, Tadeusz.
European Peregrine Falcon Working Group.
Society for the Protection of Wild Animals "Falcon" (Poland).
International Peregrine Conference(2 :19/23-09-2007 :Piotrowa/Poznań)
Warsaw : Turul Publishing,
2009.
Met lit. opg.
Peregrine falcon
Peregrine falcon