Search for: [Subject and Keywords = meadows] OR [Subject and Keywords = soils] OR [Subject and Keywords = research] OR [Subject and Keywords = Poland] OR [Subject and Keywords = primary productivity] OR [Subject and Keywords = ecology] OR [Subject and Keywords = red\-backed shrike] OR [Subject and Keywords = Lanius collurio] OR [Subject and Keywords = Łąki \-\- badania \-\- Polska] OR [Subject and Keywords = Gleby \-\- badania \-\- Polska] OR [Subject and Keywords = Produkcja pierwotna \(biologia\)] OR [Subject and Keywords = ekologia łąk] OR [Subject and Keywords = gąsiorek] OR [Subject and Keywords = Lanius collurio] OR [Title = Productivity investigation of two types of meadows in the Vistula valley. 12, Energy requirement in nestling and fledgling Red\-backed Shrike \(Lanius collurio L.\)] OR [Creator = Diehl, Barbara]