Vidor, C. Symbiotic dinitrogen fixation [Rhizobium, fixacao de nitrogenio] - Londrina, PR (Brasil): 1981. Russel, R.S.; Igue, K.; Mehta, Y.R. (eds.)The soil/root system in relation to Brazilian agricultureLondrina, PR (Brasil): 1981. p. 199-221(BR8106050-AM)F21 Subjects--Topical Terms: FIXACAO SIMBIOTICA DE NITROGENIOBACTERIARHIZOBIUM