@book{UBHD-1048048, author={Isai͏̈v, Petro}, title={Pryčyny upadku ukrai͏̈nśkoi deržavy v knjaži i kozaćki časy}, subtitle={the causes of the fall of the Ukrainian state in princely and Cossack time}, address={Rym}, year={1975}, pages={209 S.}, language={ukr and eng}, number={ARRAY(0x560db488a710)}, series={Vydannja Ukrai͏̈ns'koho Katolyc'koho Universytetu Im. Sv. Klymenta Papy}, library={UB [Signatur: 75 B 3915] ; OG [Signatur: Yu 386]}, }