@misc{Jensen_Henning_The_1974,
 author={Jensen, Henning},
 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},
 title={The reliability of the mapping method in marshes with special reference to the internationally accepted rules},
 type={Text},
 keywords={breeding birds, Denmark, congresses, birds, problems, marshland habitats, mapping method, quantitative studies, internationally accepted rules, Aves},
}