Search for: [Subject and Keywords = 20w.] OR [Subject and Keywords = Biery] OR [Subject and Keywords = obóz] OR [Subject and Keywords = harcerze] OR [Subject and Keywords = harcerstwo] OR [Subject and Keywords = alarm plecakowy] OR [Subject and Keywords = zbiór Jolanty Dudek] OR [File name = Rok 1977. Obóz harcerski w Bierach] OR [Creator = brak autora]