Columbia subject headings:
Mortgages--Switzerland.
Mortgages.
Superficies--Switzerland.
Superficies.
Harvard subject headings:
Mortgages--Switzerland.
Mortgages.
Superficies--Switzerland.
Superficies.
Princeton subject headings:
Mortgages--Switzerland.
Mortgages.
Superficies--Switzerland.
Superficies.