Columbia subject headings:
Convention Relating to the Status of Refugees
Ex post facto laws.
Political refugees--Legal status, laws, etc.--Germany (West)
Refugees.
Retroactive laws--Germany (West)
United Nations Conference of Plenipotentiaries on the Status of Refugees and Stateless Persons, (1951. Convention relating to the status of refugees : Geneva)
Harvard subject headings:
Political refugees--Legal status, laws, etc.--Germany (West)
Retroactive laws--Germany (West)
Princeton subject headings: