Columbia subject headings:
Conflict of interests--Switzerland--Zurich (Canton)
Conflict of interests--Switzerland.
Parliamentary practice--Switzerland--Zurich (Canton)
Parliamentary practice--Switzerland.
Voting--Abstention.
Harvard subject headings:
Conflict of interests--Switzerland--Zurich (Canton)
Conflict of interests--Switzerland.
Parliamentary practice--Switzerland--Zurich (Canton)
Parliamentary practice--Switzerland.
Voting--Abstention
Princeton subject headings: