Some factors concerned in the fixation of nitrogen by azotobacter
Hoffmann, C., Hammer, B.W.
Some factors concerned in the fixation of nitrogen by azotobacter - Madison 1910 - 1-172 p. - Nitrogen Wisconsin Agricultral Experiment Station. Research Bulletin No. 12 .
Some factors concerned in the fixation of nitrogen by azotobacter - Madison 1910 - 1-172 p. - Nitrogen Wisconsin Agricultral Experiment Station. Research Bulletin No. 12 .