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  1. 1

    An introduction to agricultural systems / by Spedding, Colin R.

    Published 1979
    Book
  2. 2

    The biology of agricultural systems / by Spedding, Colin R.

    Published 1975
    Book
  3. 3

    Sheep production and grazing management / by Spedding, Colin R.

    Published 1970
    Book
  4. 4

    Grasses and legumes in British agriculture /

    Published 1972
    Book