@misc{Zaborski_Bogdan_(1901–1985)_The_[post,
 author={Zaborski, Bogdan (1901–1985)},
 copyright={Rights Reserved - Restricted Access},
 address={[S.l.]},
 howpublished={online},
 year={[post 1938]},
 publisher={[s.n.]},
 language={pol},
 title={The areas inhabited by Germans and Slavs in 9th, 10th and 10th centuries},
 keywords={historical maps, Central Europe, Germanic (peoples), Slaves},
}