Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 82, 1954-55
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Acknowledgments

I am chiefly indebted to Mr. R. A. Hicks, of the Auckland Metropolitan Drainage Board, with whose co-operation this work was carried out. Dr. Pringsheim kindly studied samples which were sent to Cambridge. The work was carried out at Victoria University College during the tenure of a Research

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Scholarship, and is partly included in a thesis submitted for the degree of Doctor of Philosophy.