@misc{Żytkowicz_Leonid_(1910–1991)_Grain_1971, author={Żytkowicz, Leonid (1910–1991)}, volume={24}, editor={Lepa, Eugeniusz. Tr.}, editor={Institute of History of the Polish Academy of Sciences}, copyright={Rights Reserved - Free Access}, journal={Acta Poloniae Historica}, address={Wrocław}, howpublished={online}, year={1971}, publisher={Zakład Narodowy im. Ossolińskich}, language={eng}, title={Grain Yields in Poland, Bohemia, Hungary, and Slovakia in the 16th to 18th Centuries}, type={Text}, URL={http://rcin.org.pl./Content/13935/PDF/WA303_30499_1971-24_APH_03_o.pdf}, keywords={Poland 16th, 17th, 18th c., Bohemia 16th, 17th, 18th c., Hungary 16th, 17th, 18th c., Slovakia 16th, 17th, 18th c., grain cultivation, agriculture}, }