Biological nitrogen fixation : ecology, technology, and physiology / edited by Martin Alexander. Alexander, Martin, 1930- Nitrogen Fixation Congresses. Rhizobium Congresses. Nitrogen-fixing plants Congresses. 589.95 ALB "Proceedings of a training course ... held January 18-29, 1982, in Caracas, Venezuela"--T.p. verso. Includes bibliographies and index. New York : Plenum Press, c1984. c1984. 1984 Text ix, 247 p. : eng