Kōrero: Soil erosion and conservation

Ngā whakaahua, ngā rauemi katoa

Me pēnei te tohu i te whārangi:

Paul Gregg, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/soil-erosion-and-conservation/media (accessed 24 July 2021)

He kōrero nā Paul Gregg, i tāngia i te 24 Nov 2008