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Dixon, R. (2004). Historical Perspective — Development of nif Genetics and Regulation in Klebsiella pneumoniae. In: Klipp, W., Masepohl, B., Gallon, J.R., Newton, W.E. (eds) Genetics and Regulation of Nitrogen Fixation in Free-Living Bacteria. Nitrogen Fixation: Origins, Applications, and Research Progress, vol 2. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2179-8_1
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