Showing 1 - 12 results of 12 for search '"Nitrogen fixation"', query time: 0.02s Refine Results
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    by P.J. Bottomley et al..
    Published 1985
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    Published
    Subjects: ...Nitrogen fixation -- method for evaluati,...
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    Published 1983
    Subjects: ...Nitrogen-Fixation,Fores Ecology...
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