@misc{Busch_Georg_Paul_(?-1756)_Grundriss,
 author={Busch, Georg Paul (?-1756)},
 address={[Berlin]},
 howpublished={online},
 publisher={[s.n.]},
 language={mul},
 title={Grundriss der Festung Statt und Situation St. Petersburg},
 keywords={18 w., kartografia, Petersburg (Rosja), plany miast, widoki miast},
}