V oboronï Potïievoi Unïï
Subtitle: pysʹmo o. Petra Kaminsʹkoho Ch.S.V.V. avditora hr.-kat. mytropolïï 1685 r.
By: Vasylʹ Shchurat
Publisher: Nakladom "Vlasnoi Dopomohy"
Published: 1929
Place of publication: Lʹviv
Language: ukr
Number of pages: 119
Subjects: Byzantine rite; History; Sources; Church history; Catholic Church; Union of Brest