Nitrogen fixation edited by W. J. Broughton - Oxford New York Clarendon Press Oxford University Press 1981-<1983 > - v. <1-3 > 24 cm. Contents: v. 1. Ecology.--v. 2. Rhizobium.--v. 3 Legumes Subjects--Topical Terms: Nitrogen-fixing microorganismsNitrogen--Fixation Dewey Class. No.: 589