@misc{Valck_G._Astygnomon,
 author={Valck, G.},
 address={[Amsterdam]},
 howpublished={online},
 publisher={[Valk, Gerard (1652-1726)]},
 language={lat},
 language={fre},
 language={dut},
 title={Astygnomon Sive Europæarum Urbium Maxime Insignium Index : Earum Distantias Mutuas Perquam Accurate Ostendens},
 keywords={17 w., tabele odległości, miasta europejskie},
}