Biological aspects of symbiotic nitrogen fixation

The subject of symbiosis between the root nodule bacteria and leguminous plants, as reflected in the practical significance of nitrogen fixation, has had a broad and comprehensive development. Two authoritative volumes (Fred, Baldwin and McCoy 1932, Wilson 1940) are well known. Less extensive reviews in recent years have concerned specialized topics (Allen and Allen 1950, 1954, Allen and Baldwin 1955, Thornton 1954, Vincent 1954a, Virtanen 1947, Wilson and Burris 1947).

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