Columbia subject headings:
Composers--Switzerland--Biography.
Liebermann, Rolf, 1910-1999.
Harvard subject headings:
Composers--Biography
Liebermann, Rolf, 1910-1999.
Opera producers and directors--Biography.
Princeton subject headings:
Composers--Germany--Biography.
Liebermann, Rolf, 1910-1999.
Opera producers and directors--Germany--Biography.