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  1. 1

    World phosphates supply to the year 2000 by Brown, Martin

    Published 1988
    Book

    World phosphates supply to the year 2000
  2. 2

    The role of phosphorus in agriculture

    Published 1980
    Available for UP System via Wiley Online Library
    Electronic Resource

    The role of phosphorus in agriculture
  3. 3

    Nauru phosphate and political progress by Viviani, Nancy

    Published 1970
    Book

    Nauru phosphate and political progress

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