Search for: [Subject and Keywords = Middle Ages \-\- Poland] OR [Subject and Keywords = water obstacles] OR [Subject and Keywords = crossing the rivers in the Middle Ages] OR [Subject and Keywords = medieval wooden bridges] OR [Subject and Keywords = średniowiecze \-\- Polska] OR [Subject and Keywords = przeszkody wodne] OR [Subject and Keywords = przeprawy przez rzeki w średniowieczu] OR [Subject and Keywords = mosty drewniane średniowieczne] OR [Title = Water obstacles and the means to cross them in warly medieval Poland] OR [Title = Water obstacles and the means to cross them in warly medieval Poland] OR [Creator = Strzyż, Piotr] OR [Creator = Strzyż, Piotr]