Columbia subject headings:
Authors, Ukrainian--Ukraine--Lʹviv--Biography.
Horak, Roman.
Lʹviv (Ukraine)--Description and travel.
Harvard subject headings:
Horak, Roman
Lʹviv (Ukraine)--Biography.
Lʹviv (Ukraine)--History.
Princeton subject headings:
Horak, Roman.
Lʹviv (Ukraine)--Biography.
Lʹviv (Ukraine)--History.