Columbia subject headings:
Engravers--Switzerland--Biography.
Wood-engraving, Swiss--20th century.
Wood-engraving, Swiss.
Harvard subject headings:
Engravers--Switzerland--Biography.
Wood-engraving, Swiss.
Wood-engraving--20th century--Switzerland.
Princeton subject headings:
Wood-engraving, Swiss.
Wood-engraving--20th century--Switzerland.