Kōrero: Soil investigation

Whārangi 6. Hononga, rauemi nō waho

Me pēnei te tohu i te whārangi:

P. J. Tonkin, 'Hononga, rauemi nō waho', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/soil-investigation/sources (accessed 8 December 2019)

He kōrero nā P. J. Tonkin, i tāngia i te 24 Sep 2007