@misc{_Tractuum,
 howpublished={online},
 publisher={P. Schenk et G. Valk},
 language={lat},
 type={mapa},
 title={Tractuum Borussiae, circa Gedanum et Elbingam: ab incolis Werder appellati cum adiuncta Neringia, nova et elaboratiissima delineatio / Authore Olao Joannis Gotho},
 keywords={Pomorze 17w., Prusy Wschodnie, Żuławy Wiślan},
}