Search for: [Subject and Keywords = perz sitowy] OR [Subject and Keywords = Elymus farctus] OR [Title = A new station of Elymus farctus subsp. boreoatlanticus on the Polish Baltic Coast] OR [Title = Nowe stanowisko perzu sitowego Elymus farctus subsp. boreoatlanticus na polskim wybrzeżu Bałtyku] OR [Creator = Frey, Ludwik] OR [Creator = Szczepaniak, Magdalena]