1. Performance of agitated gas-liquid contactors;COOPER C. M.;Ind. Eng. Chem.,1944
2. An apparatus for studying respiration of Azotobacter in relation to the energy involved in nitrogen fixation and assimilation;FIFE J. M.;J. Agr. Research,1943
3. The effect of different oxygen concentrations on the rate of respiration of Azotobacter in relation to the energy involved in nitrogen fixation and assimilation;FIFE J. M.;J. Agr. Research,1943
4. A simplified and improved method for determination of sugar;FOLIN O.;J. Biol. Chem.,1920
5. Hydrogenase and nitrogenase in azotobacter;GREEN ARET;J. Bacteriol.,1953