(1993). Biological Fixation Of Nitrogen For Ecology And Sustainable Agriculture. Springer-Verlag Berlin.
Čikaški stil citiranja (17. izdanje)Biological Fixation Of Nitrogen For Ecology And Sustainable Agriculture. Springer-Verlag Berlin, 1993.
MLA način citiranja (8. izdanje)Biological Fixation Of Nitrogen For Ecology And Sustainable Agriculture. Springer-Verlag Berlin, 1993.
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