Columbia subject headings:
Authors, Swiss--Switzerland--Zurich--Biography.
Loetscher, Hugo, 1929-2009.
Harvard subject headings:
Authors, Swiss--Switzerland--Zurich--Biography.
Loetscher, Hugo, 1929-2009.
Princeton subject headings:
Authors, Swiss--Switzerland--Zurich--Biography.
Loetscher, Hugo, 1929-2009.