631.84
S941R
           Rao, N S Subba (Ed.)
               Recent advances in biological nitrogen fixation \ N S Subba Rao - New Delhi : Oxford and IBM, 1979.
               xx, 486p+tab+fig
102623
                Subjects: Fertilizers-India; Nitrogen fertilizers-India; Nitrogen-Fixing algae as fertilizer; Plants-Nutrition; Manures-India.