Māori descent (ancestry) & Māori ethnicity (cultural affiliation)
1974 Māori Affairs Act & 1993 Electoral Act use definition: “ ‘Māori’ means a person of the Māori race of New Zealand; and includes any descendant of such a person”
1987 Māori became one of NZ's 3 official languages.
In catalogue searches, try also these general subject terms to pick up works in which the position of the Māori in New Zealand is compared.
You may find that the Rhodes House Library and the Social Science Library have useful works too.
The New Zealand Geographic Board Ngā Pou Taunaha o Aotearoa has the task of assigning official names to places and significant features in New Zealand and in the Ross Sea region of Antarctica.
“Māori land” is defined by Te Ture Whenua Māori Act 1993. The definition in the Act is used by the Māori Land Court whenever it is required to determine the status of Māori land. The status may be one of the following: “Māori freehold land,”"Māori customary land,” or "General land owned by Māori".