Dixon, R. O. D. Nitrogen fixation in plants / R.O.D. Dixon and C.T. Wheeler. - Glasgow : New York : Blackie ; Chapman and Hall, 1986. - ix, 157 p. : ill. - Tertiary level biology . ISBN: 0412013819 0412013916 (pbk.) LCCN: 90033179 Subjects--Topical Terms: Plant physiology.Nitrogen-fixing microorganisms.Nitrogen--Fixation