Petŭr Parchevich i Bogdan Khmelnit︠s︡ki
Subtitle: po sluchaĭ 300-godishninata ot prisŭedinenieto na Ukraĭna kŭm Rusii︠a︡
Published: 1954
Place of publication: Sofii︠a︡
Language: bul
Notes: Reprinted from Priroda : nauchno-populi︠a︡ren dvumesechnik za estestveno-istoricheski znanii︠a︡, God. 3 (1954, Maĭ-i︠u︡ni).