Columbia subject headings:
Harvard subject headings:
World War, 1914-1918--Ukraine--Lʹviv.
World War, 1939-1945--Ukraine--Lʹviv.
Princeton subject headings:
Lʹviv (Ukraine)--Ethnic relations.
Lʹviv (Ukraine)--History--20th century.
World War, 1914-1918--Ukraine--Lʹviv.
World War, 1939-1945--Ukraine--Lʹviv.