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by Smith, D.G. (comp.) (Ministry of Works and Development, Water and Soil Division, Head Office. Wellington). -- Ministry of Works and Development, Water and Soil Division, Head OfficeWellington
by Smith, D. G; Macaskill, J. B; Stevenson, C. D; Edgerley, W. H. L. -- New Zealand Water and Soil Division; National Water and Soil Conservation Organisation (N.Z.)
by Smith, D.G. (David Glynn); Williamson, R. B. (Ronald Bruce). -- New Zealand Water and Soil Directorate.; New Zealand National Water and Soil Conservation Authority
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