Physiological studies on the nitrogen fixing bacteria of the genus rhizobium
Walker, Rudger H.
Physiological studies on the nitrogen fixing bacteria of the genus rhizobium - Ames 1928 - 369-406 p. - Iowa Agricultural Experiment .
Physiological studies on the nitrogen fixing bacteria of the genus rhizobium - Ames 1928 - 369-406 p. - Iowa Agricultural Experiment .