@misc{Purroy_Francisco_Jose_Breeding_1974,
 author={Purroy, Francisco Jose},
 editor={Polska Akademia Nauk. Instytut Zoologii},
 editor={Meeting of the International Bird Census Committee (4 ; 1972 ; Dziekanów Leśny)},
 editor={Meeting of the European Ornithological Atlas Committee (2 ; 1972 ; Dziekanów Leśny)},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1974},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 type={Text},
 title={Breeding communities of birds in the beech and fir forests of the Pyrenees},
 keywords={forest birds, breeding birds, Spain, Pyrenees, congresses, quantitative studies, birds, Aves},
}