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Effect of sewage sludge on nodulation and N 2 −fixation in alfalfa grown on calcareous loamy soils
Journal article

Effect of sewage sludge on nodulation and N 2 −fixation in alfalfa grown on calcareous loamy soils

F. N. Barakah, S. H. Salem and A. M. Heggo
Zeitschrift für Pflanzenernährung und Bodenkunde, Vol.159(3), pp.289-296
06/1996

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