Columbia subject headings:
Harvard subject headings:
Literature publishing--Switzerland--Olten--History--20th century.
Literature, Modern--20th century--History and criticism
Swiss literature (German)--20th century--History and criticism.
Swiss literature (German)--Publishing--Switzerland--Olten--History--20th century.
Walter Verlag.
Princeton subject headings:
Literature publishing--Switzerland--Olten--History--20th century.
Literature, Modern--20th century--History and criticism.
Swiss literature (German)--20th century--History and criticism.
Swiss literature (German)--Publishing--Switzerland--Olten--History--20th century.
Walter Verlag.