Columbia subject headings:
Composers--Germany--Biography.
Composers--United States--Biography.
Conductors (Music)--Germany--Biography.
Conductors (Music)--United States--Biography.
Wetzler, Hermann Hans, 1870-1943--Criticism and interpretation.
Wetzler, Hermann Hans, 1870-1943.
Harvard subject headings:
Composers--Germany--History--20th century.
Composers--United States--History--20th century.
Conductors (Music)--Germany--History--20th century.
Conductors (Music)--United States--History--20th century.
Wetzler, Hermann Hans, 1870-1943--Criticism and interpretation.
Princeton subject headings:
Composers--Germany--History--20th century.
Composers--United States--History--20th century.
Conductors (Music)--Germany--History--20th century.
Conductors (Music)--United States--History--20th century.
Wetzler, Hermann Hans, 1870-1943--Criticism and interpretation.