Protection of forest ecosystems : selected problems of forestry in Sudety mountains Author(s) Paschalis, Piotr Zajaczkowski, Stefan
Protected of forest ecosystems : selected problems of forestry in Sudety Mountains Author(s) Paschalis, Piotr Zajaczkowski, Stefan
Protection of forest ecosystems biodiversity of Bialowieza primeval forest Author(s) Paschalis, Piotr Rykowski, Kazimierz Zajaczkowski, Stefan
