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    The mineral nutrition of tea with particular reference to Potassium / by Willson, K. C.

    Published 1969
    Thesis Book
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  4. 4

    Potassium symposium : 12 papers read at the Fourth Congress of the International Potash Institute (4 sessions), Madrid 1958.

    Published 1958
    Conference Proceeding Book
  5. 5

    Response of grain sorghum to phosphorus and potassium in dry lowlands of Papua New Guinea / by Vance, P.N

    Published 1981
    Conference Proceeding Book
  6. 6

    Sulphate of potash for quality.

    Published 1986
    Book