@InCollection{Czechowski:2024,
author
=
"P.Czechowski and O.Ciebiera",
title
=
"Liczebność bocianów białych w Polsce",
pages
=
"13--14",
year
=
"2024",
booktitle
=
"Poradnik ochrony bociana białego (Cicionia cicionia) ISBN: -",
publisher
=
"Liga Ochrony Przyrody",
address
=
"Warszawa",
}