Search for: [Subject and Keywords = work of nouns in Poland \(1918\-1939\)] OR [Subject and Keywords = leavs in Poland \(1918\-1939\)] OR [Subject and Keywords = Urlopy \-\- \-\- Polska \-\- 1918\-1939 r. \-\- \[JHPBN\]] OR [Subject and Keywords = Kolejarze \-\- praca \-\- Polska \-\- 1918\-1939 r. \-\- \[JHPBN\]] OR [Title = Urlopy wypoczynkowe maszynistów kolejowych w świetle ankiety 1931 roku] OR [Title = Urlopy wypoczynkowe maszynistów kolejowych w świetle ankiety 1931 roku] OR [Creator = Derengowski, Jan] OR [Creator = Derengowski, Jan]