Search for: [Subject and Keywords = archaeology] OR [Subject and Keywords = archaeological site] OR [Subject and Keywords = stronghold] OR [Subject and Keywords = castle \(Czersk, Poland\)] OR [Subject and Keywords = geodesy] OR [Subject and Keywords = hipsometry] OR [Subject and Keywords = Czersk \(Poland\)] OR [Subject and Keywords = Masovia \(Poland \; region\)] OR [Subject and Keywords = archeologia] OR [Subject and Keywords = stanowisko archeologiczne] OR [Subject and Keywords = grodzisko] OR [Subject and Keywords = zamek \(Czersk, Polska\)] OR [Subject and Keywords = geodezja] OR [Subject and Keywords = hipsometria] OR [Subject and Keywords = Czersk \(Polska\)] OR [Subject and Keywords = Mazowsze \(Polska \; region\)] OR [Title = Czesk. Sytuacja] OR [Title = Czersk. Sytuacja] OR [Creator = Bereziński, J.] OR [Creator = Bereziński, J.]