Biological Nitrogen Fixation for Sustainable Agriculture : extended versions of papers presented in the symposium, Role of Biological Nitrogen Fixation in Sustainable Agriculture, at the 13th Congress of Soil Science, Kyoto, Japan, 1990 / (Acc: 897) - Ladha, J. K. (Jagdish Kumar), 1952-; George, T. (Thomas), 1958-; Bohlool, Behzad Ben. (Dordrecht ; Boston : Kluwer Academic Publishers ; [Los Baños] : International Rice Research Institute, 1992)
Keywords: Nitrogen in agriculture; Nitrogen; Sustainable agriculture