Search for: [Subject and Keywords = lake\-area] OR [Subject and Keywords = disappearance of lakes] OR [Subject and Keywords = protected areas] OR [Subject and Keywords = GIS] OR [Subject and Keywords = powierzchnia jezior] OR [Subject and Keywords = zanikanie jezior] OR [Subject and Keywords = obszary chronione] OR [Subject and Keywords = GIS] OR [Title = Zmiany powierzchni jezior wybranych obszarów chronionych na podstawie materiałów kartograficznych\* = Lake\-area changes in selected protected areas on the basis of cartographic materials] OR [Creator = Ławniczak, Agnieszka E.] OR [Creator = Kutyła, Sebastian]