Dyfyniad APA

Ladha, J. K. (1992). Biological nitrogen fixation for sustainable agriculture. London: Kluwer Academic Publishers.

Dyfyniad Arddull Chicago

Ladha, J. K. Biological Nitrogen Fixation for Sustainable Agriculture. London: Kluwer Academic Publishers, 1992.

Dyfyniad MLA

Ladha, J. K. Biological Nitrogen Fixation for Sustainable Agriculture. London: Kluwer Academic Publishers, 1992.

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