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  1. 1

    Genetic engineering for nitrogen fixation /

    Published 1979
    Book
  2. 2

    Plant biochemistry /

    Published 1976
    Book
  3. 3

    Plant biochemistry /

    Published 1967
    Book
  4. 4

    Limitations and potentials for biological nitrogen fixation in the tropics /

    Published 1978
    Book