More links and websites
Data and reports on life expectancy, from Statistics New Zealand.
More suggestions and sources
Pool, Ian. ‘Cross-comparative perspectives on New Zealand health.’ In Social dimensions of health and disease: New Zealand perspectives, edited by John Spicer, Andrew Trlin and Jo Ann Walton, 16–50. Palmerston North: Dunmore Press, 1994.
Pool, Ian. Te iwi Maori: a New Zealand population, past, present & projected. Auckland: Auckland University Press, 1991.
Pool, Ian, Arunachalam Dharmalingam, and Janet Sceats. The New Zealand family from 1840: a demographic history. Auckland: Auckland University Press, 2007.