Columbia subject headings:
Books and reading--Switzerland--Zurich (Canton)--History.
Zurich (Switzerland : Canton)--History.
Zurich (Switzerland : Canton)--Social conditions.
Harvard subject headings:
Books and reading--Switzerland--Zurich (Canton)--History.
Zurich (Switzerland : Canton)--History.
Zurich (Switzerland : Canton)--Social conditions.
Princeton subject headings:
Books and reading--Switzerland--Zurich (Canton)--History.
Zurich (Switzerland : Canton)--History.
Zurich (Switzerland : Canton)--Social conditions.