New Zealand. Ministry of Works and Development. Water and Soil Division & National Water and Soil Conservation Organisation (N.Z.). (1978). Water & soil miscellaneous publication. Water & Soil Division, Ministry of Works & Development for the National Water & Soil Conservation Organisation.

New Zealand. Ministry of Works and Development. Water and Soil Division and National Water and Soil Conservation Organisation (N.Z.). Water & Soil Miscellaneous Publication. [Wellington, N.Z.]: Water & Soil Division, Ministry of Works & Development for the National Water & Soil Conservation Organisation, 1978.

New Zealand. Ministry of Works and Development. Water and Soil Division and National Water and Soil Conservation Organisation (N.Z.). Water & Soil Miscellaneous Publication. Water & Soil Division, Ministry of Works & Development for the National Water & Soil Conservation Organisation, 1978.