Columbia subject headings:
Harvard subject headings:
Authors, Ukrainian--20th century--Biography
Dubas, Mykola--Friends and associates.
Dubas, Mykola--Political activity.
Youth--Political activity--Ukraine, Western--History--20th century.
Princeton subject headings:
Authors, Ukrainian--20th century--Biography.
Dubas, Mykola--Friends and associates.
Dubas, Mykola--Political activity.
Youth--Ukraine, Western--Political activity--History--20th century.