Books by Karol T. Firich:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Firich, Karol T.: Le caractère polonais de la Haute-Silésie d'après les statistiques officielles prussiennes et les résultats du plébiscité. (Palais de la Diète, 1921), also by Stanisław Dygat (page images at HathiTrust)- Firich, Karol T.: Polish character of Upper Silesia according to official Prussian sources and the results of the plebiscite (The Central Polish plebiscite committee, 1921), also by Waldemar A. Przedpelski (page images at HathiTrust)
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