Search for: [Subject and Keywords = Przemyśl Fortress] OR [Subject and Keywords = Fort XI \"Duńkowiczki\"] OR [Subject and Keywords = fortifications] OR [Subject and Keywords = destructions] OR [Subject and Keywords = postcards] OR [Subject and Keywords = World War \(1914\-1918\)] OR [Subject and Keywords = twierdza Przemyśl] OR [Subject and Keywords = Fort XI „Duńkowiczki”] OR [Subject and Keywords = fortyfikacje] OR [Subject and Keywords = zniszczenia] OR [Subject and Keywords = wojna światowa \(1914\-1918\)] OR [Subject and Keywords = karty pocztowe] OR [Title = Przemyśl, Fort Nr. 11]