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  1. 1
    by Stark, John D. (John Douglas)
    Published 1985
    “...Published by the National Water and Soil Conservation Authority by the Water and Soil Directorate, Ministry of Works and Devlopment,...”
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    A macroinvertebrate community index of water quality for stony streams /
  2. 2
    by Freeman, M. C.
    Published 1986
    “...Published for the National Water and Soil Conservation Authority by the Water and Soil Directorate, Ministry of Works and Development,...”
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    Aquatic toxicity tests : comparative assessment of four acute tests and their potential application in New Zealand /

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