The importance of rural parks for the occurrence of the Rook Corvus frugilegus in the eastern part of the Lublin region (E Poland) – ecological and social factors

Autor Kitowski, Ignacy
Zdroj: 1. Ekológia (Bratislava) 1. Roč. 32, č. 3 (2013), s. 283-289 1. 1335-342X