Kōrero: Soil investigation
Whārangi 7. Ngā whakaahua, ngā rauemi katoa
From page 1 - First observations
From page 2 - Early investigations and bush sickness: 1900–1930
From page 3 - DSIR soil science: 1930–1950
From page 4 - Golden age of soil survey: 1951–1985
From page 5 - Changing role of soil science: 1986 onwards
Me pēnei te tohu i te whārang
P. J. Tonkin, Soil investigation, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/mi/story/5761/media (accessed 4 June 2026).
He kōrero nā P. J. Tonkin, i tāngia i te 1 March 2009.