Columbia subject headings:
Harvard subject headings:
Customary law--Nigeria--Rivers State.
Land tenure--Law and legislation--Nigeria--Rivers State.
Okrika (African people)--Legal status, laws, etc.
Princeton subject headings:
Customary law--Nigeria--Rivers State.
Customary law--Nigeria.
Land tenure--Law and legislation--Nigeria--Rivers State.
Land tenure--Law and legislation--Nigeria.
Okrika (African people)
Okrika (African people)--Legal status, laws, etc.