Volume 12, Bulletins 146-156. (146) Studies on the Development of Butter Cultures from Mixtures of Organisms; (147) Methods for Determining Carbon Dioxide Production in Soils; (148) Some Chemical and Bacteriological Effects of Various Kinds and...
Volume 13, Bulletins 157-166. (157) Winogradsky Spontaneous Culture Method for Determining Certain Soil Deficiencies; (158) Production of Gum by Certain Species of Rhizobium; (159) Bacteriology of Butter: V. Studies on the Microorganisms in...