Search results for: Colwell, J. D.

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  1. 1

    Computations for studies of soil fertility and fertilizer requirements

    Authors: Colwell, J. D.
    Published: Commonwealth Agricultural Bureaux, 1978
    Physical Description: ix, 297 pages ; 30 cm
    Book
  2. 2

    Estimating fertilizer requirements : a quantitative approach

    Authors: Colwell, J. D.
    Published: CAB International, 1994
    Physical Description: x, 262 pages : illustrations ; 24 cm
    Book