Jessen, M.R., Crippen, T.F., Page, M.J., Rijkse, W.C., Harmsworth, G.R., & McLeod, M. (1999) Land use capability classification of the Gisborne - East Coast region: a report to accompany the second-edition, New Zealand land resource inventory (Landcare Research science series 21). Wellington New Zealand: Manaaki Whenua Press. Retrieved from: http://digitallibrary.landcareresearch.co.nz/cdm/ref/collection/p20022coll1/id/278
Here are some resources for soils
NOTE: course texts can be searched from the Library catalogue using a 'Course Code' search
Browsing the Library Catalogue:
Try a subject search: Soils--New Zealand or Soil Science--New Zealand
There are the government departments responsible for soils in NZ:
Eight Crown Research Institutes (CRIs) were formed in 1992, when the Department of Scientific and Industrial Research (DSIR) was disestablished. CRIs are Crown-ownded companies created to undertake scientific research and related activities, they operate as stand-alone companys. Many of the CRIs have interests in, and responsibilities for, NZ soils: