Nitrogen fixation : achievements and objectives : proceedings of the 8th International Congress on Nitrogen Fixation, Knoxville, Tennessee, U.S.A., May 20-26, 1990 /
International Congress on Nitrogen Fixation(8th :1990 :Knoxville, Tenn.)
Gresshoff, Peter M.,1948-
New York ; London : Chapman and Hall,
1990.
Includes index.
Nitrogen
Nitrogen-fixing microorganisms
Nitrogen-fixing plants
Plant-microbe interrelationships