Columbia subject headings:
Harvard subject headings:
Ruthenians--Europe, Eastern--Civilization.
Ruthenians--Hungary--Civilization.
Ruthenians--Poland--Civilization.
Ruthenians--Slovakia--Civilization.
Ruthenians--Ukraine--Civilization.
Princeton subject headings:
Facsimiles.
Ruthenians--Europe, Eastern--Civilization.
Ruthenians--Hungary--Civilization.
Ruthenians--Poland--Civilization.
Ruthenians--Slovakia--Civilization.
Ruthenians--Ukraine--Civilization.