Piotr Drzewiecki (Q229907)
(1865-1943) Engineer, technologist and social activist, mayor of the city of Warsaw in 1917-1921, president of the board of the "Liga Pracy" society in 1919-1930.
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Piotr Drzewiecki |
(1865-1943) Engineer, technologist and social activist, mayor of the city of Warsaw in 1917-1921, president of the board of the "Liga Pracy" society in 1919-1930. |