Graham, P. H. (1982). Research on biological nitroten fixation in the international agricultural research centers. International Center for Tropical Agriculture.
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Cita Chicago Style (17a ed.)
Graham, Peter H. Research on Biological Nitroten Fixation in the International Agricultural Research Centers. International Center for Tropical Agriculture, 1982.
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Cita MLA (9a ed.)
Graham, Peter H. Research on Biological Nitroten Fixation in the International Agricultural Research Centers. International Center for Tropical Agriculture, 1982.
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