Columbia subject headings:
Harvard subject headings:
Emigration and immigration law.
Jus cogens (International law)
Refugees--Legal status, laws, etc.
Princeton subject headings:
Administrative discretion.
Emigration and immigration law--New Zealand.
Emigration and immigration law.
Human rights.
International and municipal law.
Jus cogens (International law)
Refugees--Legal status, laws, etc.