Columbia subject headings:
Harvard subject headings:
Catholic Church in Ruthenia.
Catholic Church--Byzantine rite, Ruthenian--Controversial literature.
Catholic Church--Byzantine rite, Ruthenian--Doctrinal and controversial works.
Catholic Church--Byzantine rite, Ruthenian--History.
Catholic Church--Controversial literature.
Catholic Church--Doctrines.
Catholic Church--Ukraine--Zakarpatsʹka oblastʹ
Princeton subject headings:
Catholic Church. Byzantine Rite (Ukrainian)--History.
Zakarpatsʹka oblastʹ (Ukraine)--Religion.