@misc{Bibliographisches_Institut_(Lipsk)_Polen_[post,
 author={Bibliographisches Institut (Lipsk)},
 copyright={Public Domain},
 address={Leipzig},
 howpublished={online},
 year={[post 1934]},
 publisher={Bibliographisches Institut AG},
 language={ger},
 language={pol},
 title={Polen und baltische Staaten},
 type={Image},
 keywords={chorographic maps, political-administrative maps, Poland, Baltic states, Latvia, Estonia, Lithuania},
}