Search Results - Keulen, H. Van

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  1. 1
    Crop response to the supply of macronutrients /

    Crop response to the supply of macronutrients / by Keulen, H. van

    Published 1982
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  2. 2
    Modelling of agricultural production : weather, soils and crops /c�. van Keulen and J. Wolf.

    Modelling of agricultural production : weather, soils and crops /c�. van Keulen and J. Wolf. by Keulen, H. Van

    Published 1986
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