Written by an eminent group of international researchers, these papers consider the molecular biology underlying nitrogen fixation. They describe the enzymology, biochemical physiology, and electron transport of various nitrogen-fixing plants, including rhizobium and legumes. Expanding and complementing the earlier volumes, this authoritative collection will provide useful, up-to-date reviews for botanists, plant biochemists and physiologists, and agricultural scientists. From reviews of the earlier volumes: "A valuable addition to both personal and institutional libraries. Both the beginning student of nitrogen fixation and the well-established veteran will find the reviews enlightening."-- Soil Science. "Convenient and informative."--American Scientist