Search for: [Subject and Keywords = early Middle Ages \-\- Poland] OR [Subject and Keywords = archaeology] OR [Subject and Keywords = geodesy] OR [Subject and Keywords = hipsometry] OR [Subject and Keywords = archaeological site] OR [Subject and Keywords = stronghold] OR [Subject and Keywords = Czerchów, Ozorków commune \(Poland\)] OR [Subject and Keywords = Central Poland] OR [Subject and Keywords = archeologia] OR [Subject and Keywords = geodezja] OR [Subject and Keywords = hipsometria] OR [Subject and Keywords = stanowisko archeologiczne] OR [Subject and Keywords = grodzisko] OR [Subject and Keywords = średniowiecze wczesne \-\- Polska] OR [Subject and Keywords = Czerchów, gm. Ozorków \(Polska\)] OR [Subject and Keywords = Polska Środkowa] OR [Title = Czerchów, stanowisko 1, pow. Łęczyca, pole zwane \"Góry\", grodzisko wczesnośredniowieczne] OR [Title = Czerchów, stanowisko 1, pow. Łęczyca, pole zwane \"Góry\", grodzisko wczesnośredniowieczne] OR [Creator = Wieczorek, Janusz] OR [Creator = Wieczorek, Janusz]