@misc{Keyser_Erich_(1893-1968)_Danzigs,
 author={Keyser, Erich (1893-1968)},
 howpublished={online},
 publisher={A. W. Kafemann},
 language={ger},
 type={książka},
 title={Danzigs Entwicklung 1924},
 keywords={historia, Gdańsk (Polska), wydawnictwa popularne},
}