Whangarei / prepared by the Cartographic Branch, Department of Lands and Survey and published by the Water and Soil Division of the Ministry of Works and Development for the National Water and Soil Conservation Organisation, New Zealand ; compiled by L.E.Whiley and J.E.T. Wood from field work by B.E. Burridge and R. W. Cathcart, Northland Catchment Commission and S.D. Walsh, J.E.T. Wood, L.E. Whiley and N. Trustrum, Ministry of Works and Development. .