A Felvidék eltótosodása

This is supposed to describe historical landownership in upper Hungarian counties which are for the most part, now in Slovakia after 1920 Treaty of Trianon and later, after WWII. It mentions some landowner names as well as economic and political structure.
Unfortunately, it only examines 2 counties (Bars and Hont) rather than the full list (Pozsony, Nyitra, Bars, Hont, Nógrád, Pest, Gömör, Abauj, Zemplén és Ung megyék területéröl), so it is poorly categorized as it explains this on the title page in Hungarian.
As it was written before WWI, it is historically significant for genealogists.