@book{UBHD-1031210, author={Winkler, Wilhelm}, title={Demometrie}, publisher={Duncker & Humblot}, address={Berlin}, year={1969}, pages={447 S.}, language={ger}, isbn={3-428-02266-1 and 978-3-428-02266-3}, library={WS [Signatur: WS/QU 300 W775]}, }