. Plant physiology. Plant physiology. 74 PHYSIOLOGY OP NUTRITION very probable, but we owe the final solution of this problem to Vinogradskiii and Beijerinck.^' Vinogradskii caused the development of nitrogen-fixmg. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Palladin, Vladimir Ivanovich, 1859-1922; Livingston, Burton Edward, 1875-; Hopping, Aleita, 1890-. Philadelphia, P. Blakiston's Son & Co

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