Iowa State College Journal of Science 15.4

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1941-07-01
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Abstract

Some Contributions to Soil Microbiology and Their Influence on the Development of This Science. F.B. Smith pages 349-352

Soil Respiration Studies on the Decomposition of Native Organic Matter. Walter B. Bollen pages 353-374

A Place for the Plate Count Method As Applied to Soil. Norman James and Marjorie L. Sutherland pages 375-384

Influence of the Decomposition of Organic Materials on Some Properties of Alkaline-Calcareous Soils. W.P. Martin and W.A. Kleinkauf pages 385-402

A Rapid Method for the Determination of Total Phosphorus in Soil and Plant Material. W.R. Shelton and Horace J. Harper pages 403-414

Studies on Different Cultures of Rhizobium Leguminosarum and of Gypsum and Straw for Seed Pea Production. S.C. Vandecaveye and W.H. Fuller pages 415-424

Factors Influencing the Solubility of Iron and Phosphorus in Chlorotic and Nonchlorotic Areas of Hyrum Clay Loam. D.Wynne Thorne pages 433-446

Numbers of Micro-organisms in Relation to Aggregate Size. G.G. Pohlman and R.J. Nottingham pages 447- 450

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